The success continued into the season, with Mercedes-Benz developing the W196 throughout the year. Mercedes-Benz again dominated the season, with Fangio taking four races, and his new teammate Stirling Moss winning the British Grand Prix. Fangio and Moss finished first and second in that year's championship. The 1955 disaster at the 24 Hours of Le Mans on 11 June, which killed Mercedes-Benz sportscar driver Pierre Levegh and more than 80 spectators led to the cancellations of the French, German, Spanish, and Swiss Grands Prix. At the end of the season, the team withdrew from motor sport, including Formula One. During this first period of the team's participation in Formula One, Mercedes won 9 races in total, including three Grands Prix (the 1954 French Grand Prix, 1954 Italian Grand Prix and 1955 Italian Grand Prix) won by the streamlined "Type Monza", making them the only three races won by a closed-wheel car in Formula One history.