Never on someone in particular, but I live along a nice wide road, with a very deceptive curve in it just past my house. Our bedroom window faces this road. Every few months, we are awakened in the middle of night because someone was either speeding, drunk, or just not paying attention, and lost control in that curve. So, I get to call 911 every few months while DH runs out to try to help. There have been some really, really bad ones, unfortunately. One was so bad we couldn't deal with what we had seen and drove to wdw the next day.