In Pixar's Cars 3, the season-ending race is called the Florida 500.
The event takes place at the fictional Florida International Speedway and becomes the film's climactic contest. Lightning McQueen initially enters as the veteran racer trying to prove he can still compete with the younger, technologically advanced Jackson Storm.
During the race, McQueen changes strategy and gives Cruz Ramirez the opportunity to take his place. Cruz wins the Florida 500, while McQueen accepts a new role as her mentor and continues racing in a different capacity. The result makes the race important not only as a sporting finish but also as the conclusion of McQueen's character arc.
The Florida 500 should not be confused with the Piston Cup championship itself. The Piston Cup is the broader racing competition, whereas the Florida 500 is a specific race within that world. Cars 3 was released in 2017 and was directed by Brian Fee, making the event part of the franchise's third feature-film storyline.