Lightning McQueen competes in the fictional Piston Cup championship in Pixar’s Cars.
At the beginning of the film, Lightning is a rookie race car competing for the Piston Cup. A three-way tie at the season finale leads to a decisive race in California, but Lightning is separated from his transport truck and ends up in Radiator Springs.
The Piston Cup is Pixar’s fictional version of a major American stock-car racing championship. Its name and visual style evoke real motorsport traditions without being an actual NASCAR championship. The Dinoco sponsorship is one of the most prestigious prizes associated with the series.
The World Grand Prix belongs to Cars 2, where Lightning races internationally. In Cars 3, the Piston Cup returns as Lightning struggles against the younger racer Jackson Storm and eventually helps Cruz Ramirez continue his racing legacy.