Cars 2 is the Pixar Cars movie whose finale is set partly in London.
The film's final World Grand Prix race takes place in London, where Lightning McQueen competes while Mater, Finn McMissile, and Holley Shiftwell uncover the conspiracy surrounding the event. The setting allows the climax to combine racing with spy-thriller action around recognizable London landmarks.
Cars 2 is the franchise's second feature film and was released in 2011. Unlike the first Cars, which centers on a stranded racer and a small American town, Cars 2 uses an international itinerary that includes Tokyo, Porto Corsa, and London.
Cars 3 also includes major racing events, but its story returns to McQueen's career crisis and training in the United States. The original Cars ends at the rebuilt Radiator Springs race venue, so neither of those films has the London finale associated with Cars 2.