Somewhere in a glass cube in the woods loaded with state of the art technology (like a sleek answering machine!) is a mope feeling sorry for himself.

Would Ferris Bueller have been friends with Cameron Frye if Cameron didn't have access to a car?  

Yes, of course he would have - Ferris is friends with everyone! But the hypochondriacal, tightly-wound rich kid with invisible parents is the perfect (and only true) foil for the perfectly in-phase with the Universe force that is Ferris Bueller.

Best: Cameron is so rich he can afford to have the soundtrack of the film sync up with whatever he is thinking so that he can sing along with it. That's how he rolls.