Grand Prix (1966 film) was released in different forms of storage.
==== Weight and fuel temperature allowance changes ====The allowed weight of cars was set to be decreased from 798 kilograms (1,759 lb) to 796 kg (1,755 lb)
 It is recognised by the Fdration Internationale de l'Automobile (FIA), the governing body of international motorsport, as the highest class of competition for open-wheel racing cars

