For me, the golden rule of Z ownership, or any nice car for that matter, never allow something like above to happen because they know where you live or they know where you park. That is why, if some bozo really wants to steal a parking space from me, give it to them. What happens when you get out of your car and come back to find out that someone keyed your car. It isn't worth it. Or worse, that person could pull out a gun on you later or something. I live in Cali... so go figure. Just not worth it. Sorry to sound like a Dad, but that's my two cents.