Was it in a car park by any chance? If it was there will probably be cctv. If not, if it was outside houses, then you could go to their doors and ask. Just in case they saw anything. If you tell the police, there is about an 0% chance they will care. An old woman in a jeep scraped all down the side of my mates car in a car park, while he was in the car. She didn't notice/care, and just drove away. He got cctv footage, number places and all, took it to the police, and they just were like "stop wasting our time". They never watched the tape. like wtf