AUSCAR (Australian Stock Car Auto Racing) was an auto racing sanctioning body owned by Bob Jane, which ran American-style Superspeedway racing in Australia. The initial AUSCAR venue was the Calder Park Thunderdome Superspeedway, but over time the series expanded to include the Bob Jane owned 1/2 mile Speedway Superbowl at the eastern end of Adelaide International Raceway, the Surfers Paradise Street Circuit, and eventually several Australian road racing circuits. Three categories of racing car were developed to run on the Australian circuits.
* NASCAR: imported and locally developed versions of the American race cars * AUSCAR: down spec-ed cars, closer to production specification, initially just the Holden Commodore, but quickly expanded to include the Ford Falcon * Sportsman: lower specification again, cheaper to buy or build and older cars, and some former AUSCARs