Cars 2 was the first Pixar Cars film to feature Finn McMissile and Holley Shiftwell.
Finn McMissile is a British spy car, while Holley Shiftwell is a young British spy and technology specialist. Their investigation into a plot connected to the World Grand Prix draws Mater into an international espionage story. The characters were introduced specifically for Cars 2, which broadened the franchise beyond Radiator Springs and American stock-car racing.
Finn and Holley work for an intelligence organization and pursue criminals who plan to discredit Allinol. Their storyline gives Cars 2 its spy-film structure, with disguises, gadgets, surveillance, and action sequences in Tokyo, Porto Corsa, and London.
The original Cars centers on Lightning McQueen’s forced stay in Radiator Springs, while Cars 3 returns to his racing career and mentorship. Cars on the Road is a later Disney+ series. Thus Cars 2 is the specific feature that first introduced both Finn McMissile and Holley Shiftwell.