Just wanted to say I'm sorry to hear about your car. This has always been my worst fear. I would rather get my ass kicked instead of my car getting keyed, because my cuts will heal at least.
It's always been my opinion that any guy who keys another mans ride should have his nuts cut off with the same key used to deface the car. Maybe its a bit extreme, but maybe car keyings would be on the decline after this became common practice. I hate cowards.