The Cars universe, like that of Toy Story and various other Pixar properties, features a world in which every character is a certain inanimate object.
Owen Wilson asks why there are sidewalks in the Cars world, when cars can’t walk, and why the cars have doors.
And because of this, a lot of people have asked a lot of questions about how things work in that universe.
Not only is race car Lightning McQueen a sentient car, but so are his competitors and every spectator at the race – so is every other character in the world.