The Trans-Am Series was create in 1966 by the SCCA as the Trans-American Sedan Championship. Originally derived from the SCCA's A Sedan (A/S) class, it later featured purpose-built tube-frame race cars competing on road courses. The series was known for competition of muscle cars like the Ford Mustang, Chevy Camaro, Plymouth Barracuda, AMC Javelin and Dodge Challenger in the late 1960s and early 1970s, though marques from many different countries have competed in the series.