Championship race cars

The term roadster was also used for single-seat, front-engined AAA Championship Cars, primarily associated with the Indianapolis 500. Roadsters are cars with the engine and driveshaft offset from the centerline of the car. This allows the driver to be seated lower in the chassis and facilitates weight offset which is beneficial on the oval tracks. Frank Kurtis built the first roadster for the 1952 Indianapolis 500 and it was driven by Bill Vukovich who led most of the race until a steering failure eliminated him late in the race. The team went on to win the 1953 and 1954 contests with the same car. A. J. Watson and Quinn Epperly were other notable Roadster constructors. Roadsters disappeared from competition by the end of the 1960s, after the introduction, and subsequent domination, of rear-engined formula style machines. The final roadster to make the race was built and driven by Jim Hurtubise in the 1968 race and dropped out early. Hurtubise attempted to run the same car in 1969 but while making his qualifying run at a very good speed the engine failed on the last of the four laps. The car was entered many times after that but was never seriously considered fast enough to start.

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