that's pretty funny.
i wonder what the rest of the neighbors think, and if they'll join in escalating into an all-versus-all
if you can enroll a few big friends, you can move their car so its 'parked' between walls/columns/cars so that it is impossible to get in and/or will take 200 parking moves to get out. and you can leave an envelope with a can opener on the windshield.
Yeah, I was considering that, but the problem is that our car is so small, they could probably return the favour with only the two of them