a horrifying look into the future

I watched Cars last night and it raised a few questions for me. I had assumed that I would be able to get over the conceit that cars talked, however irrational it was, because it was an animated movie, and usually Pixar does a decent job with creating a world for their characters.

But I couldn't get over it, probably because there are no humans in Car-world, whereas there are humans in Toy Story and Monsters, Inc and A Bug's Life. The cars have just built(?) a world that looks like a human world. Puzzling.

Then I started to think, what if there were humans, and the cars just evolved and took over? Like in the Terminator movies? I mean, car companies are already developing cars that talk and know when to brake and how to park themselves. It's sort of reasonable to think that auto designers might give cars "eyes" on their windshields to make them seem more friendly (even if robot designers don't do it):



The ultimate question for me, though, was: how did they get tongues? and why?

And why are there regular flies in one scene, and then tiny Volkswagon buggy-flies in a separate scene?

And why, after all of this, was I still excited in the climactic racing scene? I felt betrayed by my own mind.