For the cars themselves, Lasseter also visited the design studios of the Big Three Detroit automakers, particularly J Mays of Ford Motor Company. Lasseter learned how real cars were designed.

Unlike most anthropomorphic cars, the eyes of the cars in this film were placed on the windshield (which resembles the Tonka Talking Trucks, and the characters from Tex Avery'sOne Cab's Family short and Disney's own Susie the Little Blue Coupe), rather than within the headlights. According to production designer Bob Pauley, "From the very beginning of this project, John Lasseter had it in his mind to have the eyes be in the windshield. For one thing, it separates our characters from the more common approach where you have little cartoon eyes in the headlights. For another, he thought that having the eyes down near the mouth at the front end of the car feels more like a snake. With the eyes set in the windshield, the point of view is more human-like, and made it feel like the whole car could be involved in the animation of the character.^[8] The characters also use their tires as hands and feet, the exceptions being the various tow truck characters that sometimes use their tow hooks, and the various forklift characters, which use their forks. Some cars are shown shuffling sideways by moving their wheels about on their suspensions.

Computers used in the development of the film were four times faster than those used in The Incredibles and 1,000 times faster than those used in Toy Story. To build the cars, the animators used computer platforms very similar to those used in the design of real-world automobiles.^[9]