In 1963 he left Aston Martin for "Ford Advanced Vehicles" (FAV) In 1964. After dismal results with the GT40s in their first two years, mainly dealing with reliability due to mechanical failure, the Ford GT40 programme was handed over to Holman Moody and Carroll Shelby to compete against Ferrari, with the 1966 24 Hours of Le Mans victory being the most famous, as well as 1967.