It may sound strange, but Pixar hire more than just traditional actors to appear in their films, something particularly seen in the Cars franchise, which featured actual Formula One drivers. Not only did Lewis Hamilton feature as himself (of sorts) but Michael Shumacher also paid a visit to Radiator Springs, much to the delight (and surprise) of Luigi and Guido. In addition, thanks to the nature of voice acting, they also feature different casts in different international versions. Sebastian Vettel provided the voice of Max Schnell in the German version of Cars 2, and even popular/controversial Top Gear host Jeremy Clarkson could be heard in the British version of Cars. Replacing Jeremy Piven from the original US version, Clarkson provided the voice for Harv, Lightening McQueen's agent, and even worked with director/animation legend John Lasseter when he personally flew to London for Clarkson's recording. Not bad for a non-actor who's character isn't even seen on screen.
