I had a woman do that to a car of mine while i sat in it, when i jumped out and asked her why she just damaged my car, she said "hey, it's only a car, whats the big deal?" I felt like taking a hammer to her windshield and hood, then using her line on her. I restrained myself, and asked her for her insurance info. At first she just started to walk off...but after i got a little nasty, she gave me the info and i got $500 to fix the damage.
Some people have no respect for another's property.