A Bug's Life
A Bug's life is a Pixar which tells about small cars that fighting versus some "bullies", some cars which wanna kill the small cars (the bugs). A scene of the movie appears at the end of Cars. In this scene Flik (the protagonist) doesn't believe that the cars which are in front of him are circus cars.
The movie appears also in a poster in Paris, in Cars 2.
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A Bug's life in Paris, where is named 1001 Pattes