In Pixar's Cars 2, what role does Mater accidentally take on?

Mater accidentally takes on the role of an international spy in Pixar's Cars 2.

The sequel sends Lightning McQueen to the World Grand Prix, where Mater becomes involved in an espionage plot after being mistaken for an undercover agent. His unusual behavior and accidental discoveries draw him into a mission involving secret technology and a criminal conspiracy.

Mater is not a trained secret agent. The comedy comes from the contrast between his simple, friendly personality and the sophisticated world of international intelligence. He survives situations that seem far beyond his abilities largely through honesty, luck, and unconventional problem-solving.

Cars 2 therefore differs sharply from the first film's small-town character story. It combines racing with a spy-adventure structure, while still presenting Mater and McQueen as close friends at the center of the action.