I had one yesterday, on my way to work. My store is in a strip mall and the parking is kind of all over the place. When you turn in, you get to a stop sign, then I head to the other end, where my store is. SS driver was heading to the stop sign, then stopped. As it was an SUV and couldn't see around it, I thought maybe someone in front of him was parking. nope. next thing I know his backup lights come on, but before he could reverse, I honked at him. He apparently was trying to back up, to then pull into a parking space, but wasn't aware I was behind him! And I wasn't close, but close enough he would have backed right into me.