In Pixar's Cars 2, the energy source used in the World Grand Prix is Allinol.
Allinol is presented as an alternative fuel developed and promoted by Miles Axlerod, the former oil tycoon who organizes the World Grand Prix. The fuel is publicly marketed as a clean-energy breakthrough, but its use becomes central to the film's espionage plot.
The story reveals that the apparent fuel controversy is part of a larger scheme involving electromagnetic pulses. Cars 2 uses the fictional fuel to connect international racing, energy politics, and spy-movie intrigue. Mater becomes involved after Finn McMissile and Holley Shiftwell investigate suspicious events surrounding the competition.
Allinol is not the same as Dinoco, the fictional oil company associated with the Piston Cup, or Rust-eze, Lightning McQueen's sponsor. Those brands are important to the franchise, but neither is the World Grand Prix's advertised alternative fuel.