For the 1965 Indianapolis 500, Terry was given full control over the design of the Lotus 38, and the car finished first that year, and second in 1966, each time with Clark driving. However, Terry left Lotus before the 1965 race, having already been recruited by Dan Gurney's AAR team to design a Formula One car. This led to the Eagle-Weslake V12, which has been considered one of the most aesthetic Formula One designs.