Had there been a Drivers' Championship in place at the time, he would have won three of them (his last in 1971) while driving Camaros in 1968 and 1969, and an AMC Javelin in 1971, all for Roger Penske Racing.
Se houbese un Campionato de Pilotos nese momento, gañaría tres deles (o seu último en 1971) pilotando Camaros en 1968 e 1969 e un AMC Javelin en 1971, todo para Roger Penske Racing.