Wow, that REALLY sucks! I would be livid if I came out to my car and saw that, so I can empathize. Actually, I did come out and see similar damage to a car I owned years ago. It was a piddley VW Fox, but it was the first decent car I ever owned--it was reliable, clean, and the paint was in good shape. And then when I'm walking to my car after class, I see the door smashed in. And of course, in my situation there was no evidence of who left the damage.

So at least you know who did it. Good luck fixing everything!