I had a young guy slam into my back bumper at about 50 mph once. I was slowing down to turn into a business to make a pickup. He was driving like an idiot and passed the car behind me that saw me slowing. It was a no passing zone and after he started passing he saw a car coming at him from the other direction. To avoid a head on he had to duck back into my lane behind me and was going too fast to stop. He totaled his car (I think it was a 1976 Mustang II) but only bent my bumper a little. Ironically the business at that stop was a junkyard. He offered to sell what was left of his car to them but they only handled foreign car parts so said no.