I've done this a ton of times, but for the reason that I always drive a tiny, fuel-efficient car and there's all these huge SUV's parked like shit all over the place. Unfortunately, one time I came out to find an angry criscovore repeatedly bumping its door against my car like it couldn't comprehend what was going on. There was no damage and that car was a beater, so I just said, "HI!" big smile and drove off.