The opposite happened to me before. I just parked in school and the owner of the car next to me and his friend were approaching his car. When I opened my door he was looking if I would hit his car, I carefully opened my door and he saw I was careful, and thanked me for being careful. I said I'm an enthusiast about my car and I wouldn't want to harm others' cars if they were also enthusiasts. They left and gave me the "peace sign" as they took off. I returned the gesture and went on my way. It's nice to sometimes park beside enthusiasts, you know your car will not be touched.