Commuting to work this morning, my back light came off while I was going down a hill. I heard it hit the ground and pulled over so that I could track back to see if there was any chance of salvaging it, though I didn't hold out much hope since it's a reasonably busy road. The driver behind me slowed down just to tell me that my light fell off. She got honked at by the car behind her and showed him two fingers before driving off. Two other cars slowed down as I was walking back up the hill to tell me that my light was on the road further up. Other cars were swerving around this light so that they didn't flatten it, until a taxi clipped it slightly and it shot off onto the pavement where I picked it up, pretty much undamaged. This is London. Greater (outer) London admittedly, but I'm still pretty surprised and still smiling.