I knew it was pre-rendered, its just i didn't know they could get CG looking that real. Cars was the latest CG film i saw, and tbh - wasn't all that impressed with the CG. That trailer is another level.
Cars looked awesome. It was some of pixar's best work. It may not have looked realistic, but it's a cartoon, it wasn't meant to look realistic. It's like saying dogs aren't cool, because they don't meow.