While the Cobra roadsters were dominating the tight road courses of the United States, they lacked the aerodynamics for the high speed European circuits like Le Mans. In 1964, Carroll Shelby asked Peter Brock and Ken Miles to develop a coupe version of the Cobra to compete with Ferrari, Aston Martin and Jaguar. Given the name Daytona, the coupes were unstoppable. Driven by drivers like Dan Gurney, Bob Bondurants, Allen Grant and Phil Hill, the cars won the FIA World Sportscar GT class in 1965, making it the only American manufacturer to do so.