Based on the 350km/h LaFerrari hypercar, the Ferrari FXX K is a track-only model, combining F1 technology with experimental aerodynamics.
The aim is to involve a very select - and rich - group of Ferrari customers in the development of the company's future models.
The FXX K is rumoured to cost €2.5 million ($4 million), with all 40 already sold. For that price you get the car, a set of "official Ferrari test driver" overalls and three test sessions, for which Ferrari will provide you with your own team of engineers.
The FXX K has four driving modes: Qualify, for maximum performance over a limited number of laps; Long Run, to optimise performance over longer distances; Manual Boost, for an instant burst of maximum torque; and Fast Charge, for when you want the engine to recharge the car's battery quickly.
Ferrari marketing chief Nicola Boari told Top Gear the FXX K will lap the company's Fiorano test track in 1 minute 14 seconds. That would make it five seconds faster than the LaFerrari, a solid second ahead of the 599XX Evoluzione and two seconds faster than the original FXX.
Performance figures are still to be confirmed, but it will be the most powerful Ferrari offered for sale, with a whopping 771.8Kw. 632Kw of that comes from its V12 engine, while the remaining 139Kw is from an electric motor. The FXX K also produces more than 894.8NM of torque.
Like other modern Ferraris, the FXX K uses a seven-speed twin-clutch paddle-shift gearbox that can swap cogs in a fraction of a second.
-Telegraph Group Ltd