Crappy? You Chevy loving, rusty little [muttering]... :)
Cats can scratch anything they damn well please, from what I've seen, and I'll tell you again: I've SEEN them scratch cars. And it wasn't just the clearcoat or some "crappy paint" old Ford. It was clear to the METAL.
I've seen them try to scratch the heck out of my Jag and BMW. Cat claws don't seem to have any effect whatsoever.