The first Eagles were created after AAR entered a Goodyear-backed Lotus 38 in the 1965 Indianapolis 500 and Gurney hired former Lotus designer Len Terry to develop their own car for 1966. The resulting Ford-powered Eagle T2G was codeveloped with the Eagle T1G for Formula 1. After exiting Formula One in 1968 and concentrating on Champ Car, Eagle turned to sports car racing in the 1980s, partnering with Toyota to develop the Celica and later sports prototypes for the IMSA GT Championship.