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The Indianapolis 500 the top level of American Championship Car racing, an open-wheel formula better known as "Indy Car Racing."
Schumacher, Michael.
In what sense?
Without a frame of reference an answer is not possible
In the world of car racing, the gtam was a car produced by Alfa Romeo to contest the 1970 trough 1974 European car touring championship.
Championship Off-Road Racing ended in 2008.