Formula One used the high speed track in the 1955, 1956, 1960 and 1961 Grands Prix. Stirling Moss and Phil Hill both won twice in this period, with Hill's win at Monza making him the first American to win a Formula One race. The 1961 race saw the death of Wolfgang von Trips and fifteen spectators when a collision with Jim Clark's Lotus sent von Trips' car airborne and into the barriers on Parabolica.