In Pixar's Cars, the race held to decide the Piston Cup champion is the Dinoco 400. The event is the film's climactic race after the championship ends in a three-way tie.
Lightning McQueen, Chick Hicks, and The King compete in the tiebreaker at the Los Angeles International Speedway. The race is sponsored by Dinoco, the fictional fuel and racing brand associated with The King.
McQueen initially focuses on winning at any cost, but his choices during the final laps show how much he has changed since arriving in Radiator Springs. The ending gives the race emotional importance beyond determining the trophy winner.