I once saw an old man pulling out of a car parking space and catch the wheel of a 4x4 parked opposite. He kept going so I flagged him down and told him what he'd done. He must of been 90 and about 4 foot tall bless him, and he genuinely hadn't realised he'd hit it. He only left his paint on the 4x4 but had made a right mess of the front corner of his bumper. He kept asking me "what should I do" and was quite upset so I just told him to leave his details.
I don't know if he actually did though...