Any devout Pixar fan knows that the animation studio loves sprinkling hidden easter eggs throughout their films. From the Luxo ball to the the "A113" code, Pixar movies are full of hidden gems. One of their most popular easter eggs is the appearance of the "Toy Story" Pizza Planet truck, which has been spotted in every Pixar film except "The Incredibles." One viewer claims he found the yellow and white pick-up truck in Brad Bird's 2004 superhero film, but we're not convince.