Carbon Fiber Ferrari F40

• Body and interior
The body was an entirely new design by Pininfarina featuring panels made of kevlar, carbon fiber, and aluminum for strength and low weight, and intense aerodynamic testing was employed . Weight was further minimized through the use of a plastic windshield and windows. Although the cars did have air conditioning, no carpets, sound system, or door handles were installed. The first 50 cars produced had sliding Lexan windows, while later cars were fitted with normal windows that could be rolled down.
• Aerodynamics
The F40 was designed with aerodynamics in mind. For speed the car relied more on its shape than its power. Frontal area was reduced, and airflow greatly smoothed, but stability rather than terminal velocity was a primary concern. So too was cooling as the forced induction engine generated a great deal of heat. In consequence, the car was somewhat like an open-wheel racing car with a body. It had a partial undertray to smooth airflow beneath the radiator, front section, and the cabin, and a second one with diffusers behind the motor, but the engine bay was not sealed. Nonetheless, the F40 had an impressively low Cd of 0.34 with lift controlled by its spoilers and wing.