For a start, there's the power: all 1,914hp of it. That's a lot. The McLaren Senna GTR has 825hp. The Mercedes-AMG Project One will have 1,000hp. The Bugatti Chiron has 1,500hp. Even if we give Rimac some rope here about when precisely each of the C_Two's electric motors (because there are four - one for each wheel) combine to actually output that number in practice, 1,914hp is a staggering number to write down even therotically.
So too is 1,696lb ft of torque. Which we can only assume appears instantaneously. Or, at any rate, promptly enough for the car to spirit itself from no mph to 60mph in 1.85 seconds. Again, even allowing for Rimac's one-foot rollout disclaimer, that's remarkably fast. Half a second quicker than a Chiron. And of course, Croatia's answer to Bugatti suggests that it doesn't stop there: the C_Two beating its W16-powered rival to 186mph by almost two seconds, on to a top speed of 258mph.
The manufacturer quotes 650km (around 400 miles) from a single charge. Or at least the NEDC cycle does. So you can knock at least two-thirds off that total in the real world. In fairness to Rimac, it concedes that you'll get two full laps of the Nurburgring at full power with only a negligible drop in performance. So basically a London Marathon at full tilt. That we can believe.
So charging and range not so much - but that doesn't undo the rest of the remarkable things happening here. There's still the small matter of vast 390mm Brembo carbon ceramic brake discs (front and back), four gearboxes (two single-speed at the front; two two-speed at the rear), eight on-board cameras, a lidar, six radar emitters, twelve ultrasonic sensors and an IMU sensor for claimed lever 4 autonomous driver.
Little wonder then that the C_Two produces six gigabytes of data for every hour spent driving and has the processing power equivalent to 22 MacBook Pros. Frankly we'd want 400 sensors and 72 electronic control units overseeing the Rimac All-Wheel Torque Vectoring system which is said to replace traditional ESP and TCS. It is by virtue of this 'infinitely variable' piece of kit that the car can go from 'rear-biased, driftable sportscar to a vehicle that meters traction perfectly on slippery surfaces'.
You'd probably want to see that to really believe it, frankly. And the same could probably be said of the price, which was unknown at the time of writing - although the last one (the Concept One) reputedly didn't give you much change from a million quid. So more than that then.