I don't really care about cars either way, but I'm not opposed to the idea of a Stuff Pack that adds non-functional garage doors and object cars that offer an alternative way of reaching the travel screen. I really hope they don't sink resources into animating them or making them driveable, and adding more roads and stuff to the worlds. It'd just be such a waste in my opinion.
It's kind of interesting though; a lot of the things I'm seeing some of you say you'd rather have than cars (like a new vacation world or career, or a new skill) sound equally as unappealing to me as cars do. So I guess it just kind of goes to show we won't always understand why people want the things they do.