Pixar films, it seems the most natural choice for future installments. The characters would have a perfect reason for going on a new adventure: they're superheroes with new villians to fight. By contrast, what the heck could the new Cars film be about? The tragedy of planned obsolescence? A hybrid coming to terms with its mixed parentage (Mommy was a Volt and Daddy was a Hummer)? The first Cars film was boring enough IMO; I can't see myself paying to endure a second. I hear that the reason a Cars sequel is in the pipeline is because of its lucrative toy sales. What a crummy reason for a sequel!