In Pixar's Cars 2, what worldwide racing series is introduced as the film's central competition?

In Pixar's Cars 2, the worldwide racing series introduced as the central competition is the World Grand Prix.

The World Grand Prix is organized as a three-race international event designed to promote Allinol, an alternative fuel. Its races take place in Tokyo, Porto Corsa, and London, giving the film a much broader setting than the first Cars movie.

Lightning McQueen competes in the series, while Mater becomes involved in Finn McMissile's espionage investigation. The racing event therefore serves both as a sports competition and as the public setting for the film's spy plot.

The World Grand Prix's courses are fictional, but their locations use recognizable features of real cities. The event also introduces international racers such as Francesco Bernoulli, who becomes McQueen's principal sporting rival.