When I was a poor college kid living in Rochester, NY I used to park my car on the street outside the little house I was renting with a bunch of friends. I would leave a sign on the car saying, "door is open, help yourself to whatever you find inside," in an attempt to at least keep people from damaging the car, as they were inevitably going try to break in about three or four nights a week anyway. There wasn't anything in my car worth anything to take, including the car itself really. Though I was a little annoyed when somebody took my crappy cassette copy of the "Happy Nation" Ace of Base album and I had to make another one.