This article is from the Motorsport FAQ, by A H Henry bspahh@midge.bath.ac.uk with numerous contributions by others.
(The following information is largely -- and in some cases solely --
from the IndyCar 1994 Media Guide)
The season championship is for the PPG Cup. Because the series
includes the races governed by IndyCar (Championship Auto Racing Teams)
as well as the Indianapolis 500 (governed by the United States Auto
Club), please refer to the series champion driver as the PPG Cup
Champion. There is technically no IndyCar champion since such a
champion would count points only from IndyCar-governed events (and not
the Indianapolis 500).
 
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