The FXX is only available to current Ferrari owners. Nick-named 'Client Test Drivers', purchase of the car is only possible by an application process. The FXX is the fastest production car ever made by Ferrari, but is neither road car nor specific race car. The engine is based on a version of the Enzo's 660hp 6.0 litre V12 that has been pumped out to 6.2 litres and producing in excess of 800hp.