The 1950 Swiss Grand Prix, a Formula One motor race held on 4 June 1950 at Bremgarten. Raymon Summers race this Ferrari 166.  It was race four of seven in the 1950 World Championship of Drivers. The 42-lap race was won by Alfa Romeo driver Nino Farina after he started from second position. His teammate Luigi Fagioli finished second and Talbot-Lago driver Louis Rosier came in third.
The fourth round of the Championship took place just three weeks after the series began at Silverstone (with Monaco and Indianapolis having taken place on consecutive weekends). Once again the event proved to be a battle between the Alfa Romeo factory 158s of Giuseppe Farina, Juan Manuel Fangio and Luigi Fagioli and the Scuderia Ferraris of Alberto Ascari, Luigi Villoresi (who had the latest model with de Dion rear suspension, twin overhead camshaft engine and 4-speed gearbox), Raymond Sommer and Peter Whitehead. 

Raymond Pierre Sommer (1906 – 1950) was a French, raced both before and after WWII with some success, particularly in endurance racing. He won the 24 Hours of Le Mans endurance race in both 1932 and 1933. Sommer was also competitive at the highest level in Grand Prix motor racing, but did not win a race. He won the French Grand Prix in 1936, but the event that year was run as a sports car race. After racing resumed in the late 1940s, Sommer again won a number of sports car and minor Grand Prix events, and finished in fourth place in the 1950 Monaco Grand Prix, the second round of the newly-instituted Formula One World Drivers' Championship. He was killed toward the end of 1950, when his car overturned during a race at the Circuit de Cadours.

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