The Ferrari FXX is a high performance race car and prototype built by automobile manufacturer Ferrari in Maranello, Italy. The FXX is based on the street-legal Enzo. Production of the FXX began in 2005. The FXX uses some technology developed from the Enzo Ferrari, and combines it with some new developments from Ferrari and its suppliers. However, the car is only a part of the overall program. Customers pay £2 million, but are only allowed to drive the car on special track days which are approved by Ferrari.
Description by Wikipedia