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Ferrari P4/5 Pininfarina

The Ferrari P4/5 (officially known as the Ferrari P4/5 by Pininfarina) is a one-off sports car made by Italian sports car manufacturer Ferrari but redesigned by Pininfarina for film director and stock exchange magnate James Glickenhaus.

The car was an Enzo Ferrari but the owner James Glickenhaus preferred the styling of Ferrari's 1960s race cars, the P Series. The project cost Glickenhaus US$ 4 million and was officially presented to the public in August 2006 at the Pebble Beach Concours d'Elégance.

Its design began in September 2005 with sketches by Jason Castriota moving through computer aided sculpture and stringent wind tunnel testing. More than 200 components were designed especially for the car. Most components, including the engine, drivetrain, are modified from the original Enzo Ferrari.  The Vehicle Identification Number (VIN) is unchanged from the Enzo from which it was derived. The P4/5 was publicly revealed on August 18, 2006 at the Pebble Beach Concours d'Elégance and shown again at the Paris Motor Show in late September.

Upon seeing P 4/5 Luca di Montezemolo felt that the car deserved to be officially badged as a Ferrari and along with Andrea Pininfarina and James Glickenhaus agreed that its official name would be "Ferrari P 4/5 by Pininfarina".

On September 2009, Glickenhaus announced his intention to race a new version of the P4/5 in the 2010 24 Hours Nürburgring. The car, called the P4/5 Competizione, would not be a conversion of his road car but instead an entirely new car with a Ferrari chassis, VIN and drivetrain. On May 2010 however, it was revealed that the Competizione would in fact be raced in 2011, based on a 430 Scuderia. It would be built to FIA GT2 standards and raced by Scuderia Cameron Glickenhaus in an Experimental Class under the direction of Paolo Garella, former Head of Special Projects at Pininfarina. Ferrari completely distanced themselves from the P4/5 Competizione project in 2011, refusing to sell the team parts for vital engine rebuilds between races. The car finished 39^th in the 2011 24 Hours Nürburgring (after bursting into flames) and in 2012 won its class and finished 12^th overall.

The Ferrari P4/5 can accelerate from 0-100 kilometres per hour (0-62 mph) in 3.0 seconds (0.14 seconds quicker than the Enzo). It has a top speed of 233 mph (375 km/h). The car has a frontal area of 1.906 square metres (20.52 sq ft) and the sharp nose and smooth curves mean it has a drag coefficient of only 0.34.

The interior of the P4/5 was designed by Glickenhaus himself with an iPod nano stereo and a tablet PC which features not only GPS but a 3D model of the car as well as a complete parts list and manual for easy servicing. The P4/5 also sports improved air conditioning over the Enzo and a high-strength alloy roll bar redesigned because the original was too thick and obstructed Glickenhaus' view. The seats are custom built, Glickenhaus' and his son's bodies were scanned so Pininfarina could mould the seats for their comfort, accessibility and view of the road (as with race cars). With a frame of carbon fibre composite, the seats are covered with a black mesh and red leather as selected by Glickenhaus' daughter. Pininfarina rearranged the wiring of the car so as to make the car easier to service and 595 lb (270 kg) lighter than the Enzo.

The P4/5 has the same engine as the Enzo Ferrari it was built on, a 65°  Ferrari F140 B V12. The 12 cylinders have a total capacity of 5,998 cc (366 cu in), each with 4 valves. The redline at 8200 rpm and the torque of 485 lb-ft (658 Nm) at 5500 rpm are both the same as the Enzo, but it produces marginally more power with 660 brake horsepower (492 kW) at 7800 rpm. The P4/5 uses the 6 speed semi-automatic transmission of the Enzo with black shifting paddles behind the wheel. It has two directional indicator buttons, one mounted on each side of the steering wheel.

Much of the suspension was unchanged from the original Enzo, with the same push-rod suspension at the front and rear, and the same Brembo carbon-ceramic anti-lock disc brakes with diameter of 340 millimetres (13.4 in) at the front and rear. The aluminium alloy wheels are 510 millimetres (20 in) in diameter, the front tyres have codes of ZR 255/35 and the rear, ZR 335/30.

The exterior of the car is made entirely of carbon fibre reinforced plastic and is similar in shape to the Ferrari 330 P4 as Glickenhaus requested, however it has been called a "rolling history of Ferrari-racing-DNA" sharing elements from several historic Ferrari vehicles, not just the 330 P4. The rear window is similar to that of the Ferrari 512S, the side vents are similar to the Ferrari 330 P3 and the nose is similar to that of the Ferrari 333 SP which improves cooling and the car's frontal crash safety. The butterfly doors (similar to those of the McLaren F1) are designed such that even at 160 mph (260 km/h) there is no wind noise. The improved aerodynamics give the car greater downforce, yet less drag, than the Enzo, which makes the car more stable than the Enzo at high speeds.