production of the GT350 beginning to ramp up Shelby American ran out of space at their shop in Venice, moving instead to an aircraft hangar at Los Angeles International Airport in 1965. The facility is still in existence, renovated in 1996, and is now the location of the Qantas Freight Cargo Terminal located at 6555 W Imperial Hwy, Los Angeles CA 90045. The steel tracks used to move the cars during assembly are still partially visible. The GT350 was very successful in the SCCA B-Production class, winning the class three consecutive years. The offerings from Shelby American were expanded in 1966 to include an optional automatic transmission, and Shelby famously built special edition GT350s for Hertz. Hertz was a Ford subsidiary at the time, and when the cars were returned by Hertz to Ford they were re-sold to the public as the "GT350H". For 1967 Shelby installed the Ford 428 cu. in (7.0 L) engine in the Mustang, creating the "GT500". Revised front and rear fascias distinguished the 1967 Shelby Mustangs from the common Fords they were based on. Shelby ran a separate racing team, "Terlingua Racing", in the 1967 Trans-American Sedan Championship, with Jerry Titus winning the championship driving a GT350. The sales of Shelby Mustangs increased six-fold from 1966 to 1967, and for 1968 Ford encouraged Shelby to move production from California to Michigan to simplify the logistics of shipping bare Ford Mustangs from their plant in New Jersey to Shelby. In November, 1967 Shelby American's operations were split into three separate companies. Shelby Automotive, the Mustang production arm, was set up in Livonia, Michigan and actual production moved to the facilities of fibreglass supplier A. O. Smith in nearby Ionia. The Shelby Racing Company moved from the hangar at LAX to a new office in Torrance, California. The Shelby Parts Company (later renamed to Shelby Autosports) moved to Torrance, and later to the Detroit area. After 1968 Ford took functional control of the Shelby Mustang design and production, moving production in-house for the 1969 model year. After the 1969 racing season Shelby withdrew from competition. Carroll Shelby announced he was retiring from the automotive business in January, 1970, and Shelby American and its subsidiaries were essentially defunct. Dodge Carroll Shelby maintained ownership of his Goodyear tire distributorship and set up the Shelby Wheel Company in 1971 in Gardena, California, producing and selling aftermarket aluminum wheels, but he