In Pixar's Cars 2, what is the name of the global racing series featuring Lightning McQueen?

In Pixar's Cars 2, Lightning McQueen competes in the World Grand Prix.

The World Grand Prix is a three-race international competition created by Miles Axlerod. Lightning accepts the invitation and races in Tokyo, Porto Corsa, and London against several world-class competitors, especially Francesco Bernoulli.

The series is promoted as a contest for cars powered by Allinol, a new alternative fuel. That public premise makes the races important to the plot, because the fuel's safety and the identity of the cars attacking competitors become part of the spy investigation.

The World Grand Prix is not the same championship as the Piston Cup. The Piston Cup is the domestic stock-car series associated with Lightning in Cars, while the World Grand Prix takes him to international road circuits in Cars 2.