Joe Leonard wins USAC Championship Car Series 1972
The USAC Racing Tradition
1968 USAC Midgets at San Jose
The 1971 USAC Championship Car season consisted of 12 races, beginning in Rafaela, Argentina on February 28 and concluding in Avondale, Arizona on October 23. The USAC National Champion was Joe Leonard and the Indianapolis 500 winner was Al Unser. This was the first year that road courses and ovals were separated from dirt courses in the Championship.
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