Inducted into the IMSA (International Motor Sports Association) Hall of Fame in 2023 (inaugural class).
He won the Triple Crown of Endurance Racing: 24 Hours of Daytona (1973, 1975, 1977, 1977, 1979, 1991), 12 Hours of Sebring (1973, 1981) and 24 Hours of Le Mans (1977, 1983, 1994).