1950 Grand Prix motorcycle racing season best four results counted. 1950 Grand Prix motorcycle racing season The 1950 Grand Prix motorcycle racing season was the second F.I.M. Road Racing World Championship Grand Prix season. The season consisted of six Grand Prix races in five classes: 500cc, 350cc, 250cc, 125cc and Sidecars 600cc. It began on 10 June, with Isle of Man TT and ended with Nations Grand Prix on 10 September. Points were awarded to the top six finishers in each race. All rounds counted towards the championship in the 125cc and Sidecars, the best three races counted in the 250cc, while in the 350cc and
A1 Grand Prix the A1 Grand Prix World Cup of Motorsport since the 2005–06 season. The World Cup of Motorsport was awarded to the A1 Grand Prix team which accumulated the most points over the course of a season. The A1GP formula provided a single "spec" car for each team. Each car was mechanically identical, built with many technical restrictions designed to limit performance, reduce running costs, and prevent any one or number of teams gaining an advantage through better equipment. This regulation provided a level playing field in which driver skill and team effort should become the primary factor for success. Specifically,