Yuk. Had a similar thing happened to me a few years ago, but in a funnier context. My wife owned a Mazda MX5 and one night she had to park it out on the driveway during quite a violent storm. We opened the front door in the morning to find a large stone placed on the bonnet...as if to keep the car from blowing away.

Though I have to admit I laughed only when I discovered there was no damage to the car.