In Pixar's Cars 2, which character is revealed as an undercover spy?

In Pixar's Cars 2, Finn McMissile is an undercover spy.

Finn McMissile is a British intelligence agent who investigates a plot connected to the World Grand Prix. He is an elegant silver spy car equipped with gadgets, defensive tools, and a strong sense of professional duty. Michael Caine provides Finn’s English-language voice.

Finn initially mistakes Mater for an American agent after seeing him accidentally interfere with criminals. He then works with Holley Shiftwell, another intelligence operative, while Mater is drawn into the mission. Their investigation uncovers a plan to manipulate the race and cause an international crisis.

Finn is not the only spy-related character in the film: Holley is also an agent, and Professor Zündapp is associated with the opposing conspiracy. Finn’s distinctive role is the experienced British undercover operative who recruits Mater into the adventure.