In Pixar's Cars 2, what international racing series is held across several countries?

In Pixar's Cars 2, the international racing series held across several countries is the World Grand Prix.

The event is organized by Miles Axlerod to promote Allinol, a renewable fuel presented as an alternative to petroleum. Its three races take place in Tokyo, Porto Corsa, and London, giving the film an international spy-adventure structure as well as a racing plot. Lightning McQueen enters as the representative of the United States, while Francesco Bernoulli is his principal racing rival.

The World Grand Prix is not the same competition as the Piston Cup. The Piston Cup is the domestic stock-car championship central to Cars and Cars 3, whereas Cars 2 expands the series into an international road-racing spectacle.

The event also connects to the film's mystery: several racers using Allinol suffer dangerous engine failures. Mater discovers that the failures are linked to a criminal plot involving electromagnetic pulses, so the race becomes the setting for the espionage story.