If you're unsure exactly what the 599XX Evo is, Ferrari describes it as an evolution of an 'extreme, non-homologated sports berlinetta'. In other words, it's an even more hardcore version of the 599XX, a car that's already neither road-legal nor homologated for racing. A pretty niche market, then.
You can read more about the detail of the new 599XX Evo in our original story on the car, but the headlines for the 599XX Evo are this: an extra 20hp (bringing things up to 750hp), 516lb ft of torque, 35kg less weight, a shorter final gear ratio and some deeply clever electronically controlled active aerodynamics.
A pretty mouthwatering spec, we hope you'll agree. Shame about the soundtrack to the video, though.