In the 1990 United States Grand Prix, five drivers including the winner Ayrton Senna (who later died in an accident leading the 1994 San Marino Grand Prix driving for Williams Racing) completed 72 laps, while only four drivers finished the 71 laps.
72 72 72 72 72 71 71 71 71 Ayrton Senna He died in an accident leading the 1994 San Marino Grand Prix driving for Williams Racing. 
