SSC Tuatara Top Speed run apparently faked?
Discussion
sdiggle said:
Look there's a fundamental problem in that we know the rpm, gear ratios, final drive and what gear the car was in. Its a PHYSICAL IMPOSSIBILITY that the car can do over 293mph in 6th gear as it was throughout all the runs. Also, no direct quotes from Dewetron. Please watch the Misha Charoudin vid with Robert Mitchell to understand this properly.
SantaBarbarian said:
Is it plausible that the car did do 331mph, but was so unstable at that speed, that they overlaid the gps data from that run over the video of the 280mph run for marketing reasons? The first thing I noticed when watching the Top Gear video the first time was how little the steering wheel moved, I was impressed at how incredibly stable it was at speed. Maybe at 331mph it was super squirrely, and would have spooked potential customers. Either way they need to explain themselves, and publish the full gps data set.
Copy and pasting what I wrote on the other thread about why the GPS overlaid on a different run theory doesn't work :That's debunked as in this VR video look down and to the right with your phone, you can see the GPS laptop giving the telemetry readout live, the gains in speed exactly match the gearshifts at the start for example. My theory is that the telemetry is being spoofed 'live' if that makes sense. Could be as simple as the laptop being configured to show a percentage over the Ecu/true GPS speed readout. This is given further credence as this time the speedo in front of the driver is totally non existant, it's been erased!
https://youtu.be/NOE-RTLercU
Aleckz85 said:
https://youtu.be/-dfZNUVrQ1E
Dewetron seems to have commented on this youtube video 3 hours ago. They say they haven't analyzed the measurement data yet.
??
SSC just keeps making obvious the whole thing is a fraud. Dewetron probably contacting lawyers as we speak lol Dewetron seems to have commented on this youtube video 3 hours ago. They say they haven't analyzed the measurement data yet.
??
https://cloud.dewetron.com/s/tJzr6HqrzcSZ2gG#pdfvi...
Shinysideup said:
Perhaps because it was under reading when they switched to the 2.92 final drive ratio?
Complete stab in the dark, i have no idea how the speedo picks up the signal, either via ABS rings or other mechanical means or GPS
That final drive they are now claiming isn't one supplied by CIMA the gearbox makers. The final drive they do make which is 3.11 *exactly* matches the calculated speeds as per the Misha video. This can't be a coincidence, they are blatantly claiming whatever final drive ratio to match the false speeds. Complete stab in the dark, i have no idea how the speedo picks up the signal, either via ABS rings or other mechanical means or GPS
Edited by Shinysideup on Wednesday 28th October 18:45
ch37 said:
They've explained...
"“We became aware during testing the week leading up to the record attempt that the driver display was off by approximately 14-15mph at 200mph. We were not sure how inaccurate the display would be at 300mph and beyond and we had always planned on relying solely on the precision of the satellite data to record and display speed since we knew the driver display speed would not be as accurate at those speeds. The original design specification for the driver display had a maximum top speed reading of 301 because beyond our record run we never envisioned someone trying to go that fast! But rest assured, regardless of whether or not our customers will ever try to achieve over 300mph, chassis #1 and all future Tuataras will be programmed to read up to 350mph.”
Doesn't fill you with confidence does it!
Unbelievably thick. Emphasis on 'unbelievably'. "“We became aware during testing the week leading up to the record attempt that the driver display was off by approximately 14-15mph at 200mph. We were not sure how inaccurate the display would be at 300mph and beyond and we had always planned on relying solely on the precision of the satellite data to record and display speed since we knew the driver display speed would not be as accurate at those speeds. The original design specification for the driver display had a maximum top speed reading of 301 because beyond our record run we never envisioned someone trying to go that fast! But rest assured, regardless of whether or not our customers will ever try to achieve over 300mph, chassis #1 and all future Tuataras will be programmed to read up to 350mph.”
Doesn't fill you with confidence does it!
Their tag line is literally 'life begins at 300'. But not for the speedo I guess
Byker28i said:
There's a lot of reverse engineering of maths in that statement...
Yeah 100%, they've just pulled out of their arse whatever final drive ratio retrospectively matches the figures. Especially as when Misha worked out the true speeds based on the video and Google maps it *Exactly* matches the expected speeds using the 3.16 final drive ratio that everyone assumed they had been using as per CIMAs website. CIMA being the manufacturer of the transaxle and final drive they are using.
harrylee1 said:
Jeffrey Cheng owns a Koenigsegg and was present at the SSC 'world record' run on the day. He has knowledge that CIMA did not sell the new gear ratios to SSC.
https://hcfautoparts.com/cima
Super geeky but some clever guy over on Reddit has run a spectrograph analysis on the sound and highlighted even more inconsistencies, he later did an analysis on the sound of the Koenigsegg run and that matched perfectly to the claims, funny that. Given Robert Mitchell's recent Instagram Story post I'm guessing that's the subject of the next video.
Paste below:
[b]Below is a spectrogram / audio analysis of SSC's top speed run. Needless to say, this analysis also raises further questions about SSC's claims.
Throwaway for obvious reasons. Mods requested I post this here rather than create a new thread.
EDIT: Fixed an arithmetic mistake with gear ratios.
TLDR:
• Audio analysis from the video suggests the Tuatara shifted from 5 -> 6 at ~6900 RPM (not ~7700 as claimed). Additionally, RPM at VMAX appears to be ~7650 RPM (not ~8600 as claimed). This further confirms a mismatch between audio/video/telemetry.
• Low-frequency audio data may contain useful information about absolute vehicle speed. If the data is to be believed, top speed (based on the AUDIO) is approximately ~255 mph. This is not to suggest earlier video analysis is wrong. Rather, that the audio, video, and telemetry may ALL be different from one another - and that things are even weirder than previously believed. If this analysis is true, then either the final drive differs from what is claimed, or the gear ratios do.
Relevant Links:
• Onboard Video: Claimed SSC Top Speed World Record Run (Top Gear)
• Shmee150's Video re: SSC World Record
• Misha Charoudin's Video re: SSC World Record
• Motor Trend article including SSC statement
• Pastebin of Motor Trend article including SSC statement as of GMT 2:20, October 29, 2020
Background:
When an engine runs, the noise it produces has amplitude peaks at frequencies corresponding to the engine speed and its harmonics. Therefore it's possible to extract approximate engine speed data from an audio track of sufficient quality.
The conversion from units of audio frequency (Hz) to engine speed (RPM) is a factor 60. As the the Tuatara's redline is 8800 RPM, we expect the engine to produce primary frequencies below 150 Hz = 9000 RPM. However, analysis of the overtones (harmonics, integer multiples of the fundamental frequency) is sometimes easier than the fundamental frequency depending on the audio track involved. The first overtone is most relevant to this post - it has a conversion factor to RPM of 30 and thus we would not expect it to see the signal go beyond 300 Hz = 9000 RPM.
Before getting to the analysis, I would like to stress that this is speculative and simply a presentation of what the data appears to show. I am not making any accusations. Absent comprehensive telemetry data released by SSC, this video is one of the few things we have to work with and the goal of this post is to illustrate what that data appears to contain.
Engine Spectrogram:
1. A 0-300 Hz spectrogram of the audio (Hann window size of 32768), completely uncut from the video, looks like this. Many engine overtones are distinctly visible towards the start of the video. We will be looking at the first overtone as it is by far the most distinct. This first overtone begins at 50 Hz (1500 RPM idle) and is the distinct line visible across the entire spectrogram peaking at ~255 Hz. The fundamental tone is not loud enough to be "visible" for the first ~12 seconds, but appears around that point in time. At takeoff (~10s), the first overtone rumbles around, then rises to the first shift point at ~125 Hz, which is when we also see the first peak of the fundamental frequency (at ~62.5 Hz).
2. Due to excessive wind noise it's difficult to make out the fundamental during the top-speed run. Instead we look to the first overtone which tracks clearly the entire way.
3. At 1:00 is the final shift before the run begins. This happens at an overtone frequency of ~230 Hz or approx 6900 RPM. This disagrees with SSC's statement that the 5 -> 6 shift occurred at 7700 RPM. At 7700 RPM we would expect a frequency of around ~250 Hz, but the spectrogram does not seem to indicate any strong signal traces leading up to, or away from, a shift point at 250 Hz (though there are some splotches there). Yet, distinct traces are visible to either side of 250 Hz.
4. SSC has already stated the video and telemetry are from separate runs, this would seem to confirm this, as well as suggest that the audio is as well.
5. At 1:19 max engine speed is reached. This occurs at an overtone frequency of ~255 Hz or approx. 7650 RPM. This is within 5% of the engine speed (7300 RPM) estimated by Misha and Robert Mitchell in Misha's video linked above. This value differs substantially from SSC's claimed engine speed of 8600 RPM (from their recent statement), further suggesting the audio/video are not from the same run as the telemetry.
6. At no point during the entire video does engine speed fall within 1000 RPM of the claimed redline of 8800 RPM (to clarify, 8800 RPM is the redline, while 8600 RPM is the engine speed SSC claims to have reached at VMAX).
SPECULATION - Tire Spectrogram (Vehicle Velocity) - The following considers what is, at best, trace amounts of data. However I feel it is necessary to include for completeness.
1. Similarly to the engine, numerous other mechanical systems in the vehicle also give off fundamentals and overtones as they rotate. This includes road noise from wheels and tires. At particularly high speeds, any slight imperfections in these systems will appear at frequencies equal to their rotating speed (plus harmonics). Multiple things can cause this - for example, tiny imbalances in any of the wheels can manifest as road noise at speed.
2. Any audible signal from these components would be miniscule in comparison with engine noise. This, plus other factors (frequency near the lower cutoff of typical recording range, poor temporal resolution at low frequencies, etc) means the following spectrogram should be taken as speculation at best.
3. SSC cites a tire circumference of 89.125 inches, which is in line with the specified tire measurements and their higher-than-normal tire pressure. 330 mph is ~5800 inches per second, or an expected tire speed of ~65 rotations per second (~65 Hz signal, if any is visible).
4. We can look at the end of the video at the section after the driver has let off the throttle - when the engine noise is much lower and road noise is greater by comparison. The spectrogram here shows a dark trace dropping from ~50 Hz to ~25 Hz. It is not extremely sharp, but distinct enough to be sure something is there. Whether this trace indicates wheel speed is not clear.
5. If this trace is indeed caused by wheel speed, it is substantially far off from the 65 Hz frequency we'd expect to see if the vehicle were traveling 330 mph. (Note that the data are too noisy to say with certainty that there is not ALSO a trace coming from 65 Hz.)
6. By comparison, with a wheel of this size, wheel noise at a frequency of 50 Hz would equate to a vehicle speed of approximately ~255 mph, not 330 mph.
7. The Tuatara uses all seven gears - six during acceleration, plus a final upshift to 7th at the very end of the run. What are not clear are the actual gear ratios / final drive used in the car and whether they match the ratios in SSC's statement.
8. SSC's stated 5th gear top speed is 268 mph at 8800 RPM. In this gear, at 7650 RPM, the vehicle would travel only 234 mph. Using the claimed 6th gear ratio by comparison, it would travel 287 mph at this RPM. Both are a mismatch for the audio data suggesting 255 mph.
9. Please note that this calculated spectrogram speed also does not match the vehicle speed calculated in previous YouTube videos. This could suggest either the spectrogram analysis is incorrect (data too noisy, the trace is from another source, etc), that the audio and video are also mismatched, or something else is going on. In other words, it's within the realm of possibility that part or all of the analysis can't be trusted due to lack of more data. Or, it's possible I've made mistakes here. Finally, it's possible that the audio, video, and telemetry are all from separate runs, and that yes, the values claimed by SSC are disingenuous.
Steps to Replicate Analysis Yourself:
• Rip the audio from the YouTube world-record run video and import it to Audacity or an equivalent program (any program that offers spectrogram viewing)
• Change to "Spectrogram" mode (in Audacity, click the blue dropdown arrow to the left of the track)
• Adjust the Spectrogram Settings (in Audacity, again click the blue dropdown arrow -> "Spectrogram Settings"). Use Min Freq = 0 Hz, Max Freq = 300 Hz, and set a Hann Window Size of 32768[/b]
Paste below:
[b]Below is a spectrogram / audio analysis of SSC's top speed run. Needless to say, this analysis also raises further questions about SSC's claims.
Throwaway for obvious reasons. Mods requested I post this here rather than create a new thread.
EDIT: Fixed an arithmetic mistake with gear ratios.
TLDR:
• Audio analysis from the video suggests the Tuatara shifted from 5 -> 6 at ~6900 RPM (not ~7700 as claimed). Additionally, RPM at VMAX appears to be ~7650 RPM (not ~8600 as claimed). This further confirms a mismatch between audio/video/telemetry.
• Low-frequency audio data may contain useful information about absolute vehicle speed. If the data is to be believed, top speed (based on the AUDIO) is approximately ~255 mph. This is not to suggest earlier video analysis is wrong. Rather, that the audio, video, and telemetry may ALL be different from one another - and that things are even weirder than previously believed. If this analysis is true, then either the final drive differs from what is claimed, or the gear ratios do.
Relevant Links:
• Onboard Video: Claimed SSC Top Speed World Record Run (Top Gear)
• Shmee150's Video re: SSC World Record
• Misha Charoudin's Video re: SSC World Record
• Motor Trend article including SSC statement
• Pastebin of Motor Trend article including SSC statement as of GMT 2:20, October 29, 2020
Background:
When an engine runs, the noise it produces has amplitude peaks at frequencies corresponding to the engine speed and its harmonics. Therefore it's possible to extract approximate engine speed data from an audio track of sufficient quality.
The conversion from units of audio frequency (Hz) to engine speed (RPM) is a factor 60. As the the Tuatara's redline is 8800 RPM, we expect the engine to produce primary frequencies below 150 Hz = 9000 RPM. However, analysis of the overtones (harmonics, integer multiples of the fundamental frequency) is sometimes easier than the fundamental frequency depending on the audio track involved. The first overtone is most relevant to this post - it has a conversion factor to RPM of 30 and thus we would not expect it to see the signal go beyond 300 Hz = 9000 RPM.
Before getting to the analysis, I would like to stress that this is speculative and simply a presentation of what the data appears to show. I am not making any accusations. Absent comprehensive telemetry data released by SSC, this video is one of the few things we have to work with and the goal of this post is to illustrate what that data appears to contain.
Engine Spectrogram:
1. A 0-300 Hz spectrogram of the audio (Hann window size of 32768), completely uncut from the video, looks like this. Many engine overtones are distinctly visible towards the start of the video. We will be looking at the first overtone as it is by far the most distinct. This first overtone begins at 50 Hz (1500 RPM idle) and is the distinct line visible across the entire spectrogram peaking at ~255 Hz. The fundamental tone is not loud enough to be "visible" for the first ~12 seconds, but appears around that point in time. At takeoff (~10s), the first overtone rumbles around, then rises to the first shift point at ~125 Hz, which is when we also see the first peak of the fundamental frequency (at ~62.5 Hz).
2. Due to excessive wind noise it's difficult to make out the fundamental during the top-speed run. Instead we look to the first overtone which tracks clearly the entire way.
3. At 1:00 is the final shift before the run begins. This happens at an overtone frequency of ~230 Hz or approx 6900 RPM. This disagrees with SSC's statement that the 5 -> 6 shift occurred at 7700 RPM. At 7700 RPM we would expect a frequency of around ~250 Hz, but the spectrogram does not seem to indicate any strong signal traces leading up to, or away from, a shift point at 250 Hz (though there are some splotches there). Yet, distinct traces are visible to either side of 250 Hz.
4. SSC has already stated the video and telemetry are from separate runs, this would seem to confirm this, as well as suggest that the audio is as well.
5. At 1:19 max engine speed is reached. This occurs at an overtone frequency of ~255 Hz or approx. 7650 RPM. This is within 5% of the engine speed (7300 RPM) estimated by Misha and Robert Mitchell in Misha's video linked above. This value differs substantially from SSC's claimed engine speed of 8600 RPM (from their recent statement), further suggesting the audio/video are not from the same run as the telemetry.
6. At no point during the entire video does engine speed fall within 1000 RPM of the claimed redline of 8800 RPM (to clarify, 8800 RPM is the redline, while 8600 RPM is the engine speed SSC claims to have reached at VMAX).
SPECULATION - Tire Spectrogram (Vehicle Velocity) - The following considers what is, at best, trace amounts of data. However I feel it is necessary to include for completeness.
1. Similarly to the engine, numerous other mechanical systems in the vehicle also give off fundamentals and overtones as they rotate. This includes road noise from wheels and tires. At particularly high speeds, any slight imperfections in these systems will appear at frequencies equal to their rotating speed (plus harmonics). Multiple things can cause this - for example, tiny imbalances in any of the wheels can manifest as road noise at speed.
2. Any audible signal from these components would be miniscule in comparison with engine noise. This, plus other factors (frequency near the lower cutoff of typical recording range, poor temporal resolution at low frequencies, etc) means the following spectrogram should be taken as speculation at best.
3. SSC cites a tire circumference of 89.125 inches, which is in line with the specified tire measurements and their higher-than-normal tire pressure. 330 mph is ~5800 inches per second, or an expected tire speed of ~65 rotations per second (~65 Hz signal, if any is visible).
4. We can look at the end of the video at the section after the driver has let off the throttle - when the engine noise is much lower and road noise is greater by comparison. The spectrogram here shows a dark trace dropping from ~50 Hz to ~25 Hz. It is not extremely sharp, but distinct enough to be sure something is there. Whether this trace indicates wheel speed is not clear.
5. If this trace is indeed caused by wheel speed, it is substantially far off from the 65 Hz frequency we'd expect to see if the vehicle were traveling 330 mph. (Note that the data are too noisy to say with certainty that there is not ALSO a trace coming from 65 Hz.)
6. By comparison, with a wheel of this size, wheel noise at a frequency of 50 Hz would equate to a vehicle speed of approximately ~255 mph, not 330 mph.
7. The Tuatara uses all seven gears - six during acceleration, plus a final upshift to 7th at the very end of the run. What are not clear are the actual gear ratios / final drive used in the car and whether they match the ratios in SSC's statement.
8. SSC's stated 5th gear top speed is 268 mph at 8800 RPM. In this gear, at 7650 RPM, the vehicle would travel only 234 mph. Using the claimed 6th gear ratio by comparison, it would travel 287 mph at this RPM. Both are a mismatch for the audio data suggesting 255 mph.
9. Please note that this calculated spectrogram speed also does not match the vehicle speed calculated in previous YouTube videos. This could suggest either the spectrogram analysis is incorrect (data too noisy, the trace is from another source, etc), that the audio and video are also mismatched, or something else is going on. In other words, it's within the realm of possibility that part or all of the analysis can't be trusted due to lack of more data. Or, it's possible I've made mistakes here. Finally, it's possible that the audio, video, and telemetry are all from separate runs, and that yes, the values claimed by SSC are disingenuous.
Steps to Replicate Analysis Yourself:
• Rip the audio from the YouTube world-record run video and import it to Audacity or an equivalent program (any program that offers spectrogram viewing)
• Change to "Spectrogram" mode (in Audacity, click the blue dropdown arrow to the left of the track)
• Adjust the Spectrogram Settings (in Audacity, again click the blue dropdown arrow -> "Spectrogram Settings"). Use Min Freq = 0 Hz, Max Freq = 300 Hz, and set a Hann Window Size of 32768[/b]
Edited by honda_exige on Friday 30th October 15:44
Steven_RW said:
Nice - i was waiting for someone to do something using the Audio. I had watched a video previously explaining the sound of a rotary engine as you add more rotars and how it ends up sounding like a high revving V12 and how you can work out the rpm from the sound.
Good stuff.
It all still seems remarkably silent from SSC.
RW
Yeah I found it pretty fascinating. Given this guy on Reddit used a throwaway account "for obvious reasons" I guess he maybe works for a rival, Bugatti or Koenigsegg? Good stuff.
It all still seems remarkably silent from SSC.
RW
I remember F1 using this method, both for traction control when it was banned (microphones on the car retarded power based on audio analysis of engine note) and also other teams analysing each others engine notes to deduce what they're revving to, knowing how fast they're going and working out bhp etc
Edited by honda_exige on Friday 30th October 18:05
SantaBarbarian said:
Jerod Shelby' statement, https://www.youtube.com/watch?v=BrclO1wG2Y8. He's gonna rerun it, has invited Shmee, Misha, and Robert to attend, and he wants DMO to drive, without a seatbelt.
It's a good statement. BUT still no explanation over why the raw footage can't be released. Oh well, the next run is going to be hugely anticipated and IF it does it will probably end up being the most reported record of all time. IF.
whatleytom said:
It's not really a balls up though is it. Claiming to be running a final drive that is capable of 331mph, but having been proven not to through various means. It's just a complete fabrication, somehow they seem to have come out of it ok, and have just bailed by saying they'll run again. Just hope the standard tyres which are clearly not up to the job of that sort of speed hold up, and there isn't an accident.
Doubt Webb will want to be associated with the inevitable failure coming. Wonder which mug they'll get. egomeister said:
Very true. Crashing at 300mph is pretty much certain death - it's not something I'd want to risk once, let alone having to repeat it because no-one thought to verify things accurately!
Watching the cockpit video of the run scares the crap out of me. There is so little structure to protect the driver, and I suspect limited development and testing (both structurally and aerodyamically). Compare this to something like a Le Mans Prototype which "only" has a top speed of ~350kph and itself probably wouldn't stand a chance at 300mph.
You can argue its pointless since 300 is almost certain death, but I was suprised to see no roll cage in there. But on the other hand Richard Hammond crashed at 319mph and the rollcage saved his life.... Watching the cockpit video of the run scares the crap out of me. There is so little structure to protect the driver, and I suspect limited development and testing (both structurally and aerodyamically). Compare this to something like a Le Mans Prototype which "only" has a top speed of ~350kph and itself probably wouldn't stand a chance at 300mph.
f1nn said:
Is anyone else finding the reaction to this tiresome?
SSC have committed to re running the car to confirm what they believe was achieved last time.
It either will, or it won’t.
The three stooges are should star in a remake of Poirot...analysing the engine noise indeed...get a f
king life.
SSC have committed to re running the car to confirm what they believe was achieved last time.
It either will, or it won’t.
The three stooges are should star in a remake of Poirot...analysing the engine noise indeed...get a f
king life. This is LITERALLY their job and it's interesting from a science PoV. If you have no appreciation of scientific analysis then fine go watch DMO and his Wrench Sauce 
DonBarracuda said:
Why, are you in the market for an electric ice cream van?
For those interested - Julian Thomas founder of RaceLogic weighs in - https://youtu.be/j_uTuNcqZVQ
Ollie Webb says he'd only do a second run if it's on an open runway withall the GPS systems in place.
This is glorious, they just applied a 1.5x multiplier to the GPS output and hoped no one would notice For those interested - Julian Thomas founder of RaceLogic weighs in - https://youtu.be/j_uTuNcqZVQ
Ollie Webb says he'd only do a second run if it's on an open runway withall the GPS systems in place.
Edited by DonBarracuda on Monday 2nd November 10:54
fatbutt said:
Assuming Julian is right (no reason to suspect he's wrong), it says a lot that at the speed he's estimating the car was quite unstable. This fits with my concern that the car has yet to be fully engineered in aero terms.
Good point, interesting that the Jesko Absolut has stabilising fins.
DonBarracuda said:
How quickly can someone create a fake production company? I doubt one exists otherwise why would they hire Buddy to do the filming and editing for the documentary, they're doing this all in house just like everything else.
The production company is Buddy Wyrick, he was going to launch some crappy app off the back of it harrylee1 said:
Buddy / Driven Studios / Driven Plus - it's his company. He tried to distance himself from SSC four days before Jerod announced the rerun. This to me makes him look guilty - he was trying to do some damage control.
He claims he was never paid by SSC, even though he had to hire a several film production staff to 'document' the event - I mean how do you do that when you're 'unpaid'. But he plastered his new app all over the footage too so he's getting exposure all off the back of a fake record.
Don't forget hiring the filming helicopter plus fighter jet! He claims he was never paid by SSC, even though he had to hire a several film production staff to 'document' the event - I mean how do you do that when you're 'unpaid'. But he plastered his new app all over the footage too so he's getting exposure all off the back of a fake record.
Wouldn't surprise me if the BHP claim is bogus or at least not capable of providing said BHP for the extended period of time needed for a top speed run. Making an engine provide that power for a 8 second 1/4 mile pull without heat soak is easy. Making a cooling system to enable the engine to provide said BHP over an extended period of time is very very hard.
I would suggest it's possibly beyond the ability of tiny SSC or the small engine shop they use, Nelson Racing, who typically build drag engines. Just look at the extremes Bugatti had to go to to cool the W16.
Also in the Tuatara vs Veyron Stradman race it didn't seem significantly faster than an Agera RS in the multiple Agera vs Veyron vids out there.
I would suggest it's possibly beyond the ability of tiny SSC or the small engine shop they use, Nelson Racing, who typically build drag engines. Just look at the extremes Bugatti had to go to to cool the W16.
Also in the Tuatara vs Veyron Stradman race it didn't seem significantly faster than an Agera RS in the multiple Agera vs Veyron vids out there.
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