In Pixar’s Cars, Lightning McQueen competes for the Piston Cup.
The Piston Cup is the film’s fictional stock-car racing championship. The season ends with a three-way tiebreaker between McQueen, Chick Hicks, and veteran champion The King after they finish level on points. That race sends McQueen toward California and sets the main story in motion.
The competition is styled after American stock-car racing, especially NASCAR. The King’s sponsor is Dinoco, while McQueen begins the film sponsored by Rust-eze. Chick Hicks drives for Hostile Takeover Bank, creating a clear visual and commercial rivalry among the leading racers.
The Piston Cup should not be confused with the World Grand Prix in Cars 2. The latter is an international race series introduced in the sequel, while the Piston Cup is the central championship in the original film and remains important in Cars 3.