Williams FW08B

In July 2000 the Coys International Historic Festival meeting at Silverstone celebrated 50 years of the Formula One World Championship with a display of cars representing those 50 years. One of the cars present, though it never actually raced in a Grand Prix, was the car pictured below.

It's the 6-wheeled 1982 Williams FW08B, conceived in an effort to improve traction and also to reduce drag compared to the conventional wider and larger rear tyres then used. Before Williams were able to use the car the FIA announced that all F1 cars should have four wheels, with two of them being driven.