Billed as the Trans American Sedan Championship, the Series held its first race March 25, 1966, at Sebring International Raceway in Florida. Future Formula One World Champion Jochen Rindt took the overall victory and Bob Tullius won the Over 2-Liter class. Other first-year notables included A.J. Foyt, Richard Petty, Jerry Titus and Belgium's Jacky Ickx and the others may have been the star attractions during the inaugural season, but the foundation was built with regulars like Horst Kwech and Gaston Andrey in Alfa Romeos, Tullius and Tony Adamowicz in Dodge Darts, and Bob Johnson in a Plymouth Barracuda. In 1967, Mark Donohue entered the Trans Am Series, and a legend was born. Donohue earned three victories in 1967; 10 in 1968; six in 1969; three in 1970; and seven during 1971, his final season in the Series. Donohue scored a record 29 victories while driving for Roger Penske, as well as 43 top-three finishes in 55 Trans Am races, and won the championship three times (1968, 1969 and 1971), with two runner-up positions.