Some years ago, I was in a major crash. The traffic in front of me stopped, I braked hard and stopped in time, the truck behind me rammed me into the car in front. Nearly killed me.

Some time later, I was on a snowy road. The cars in front of me stopped, I stopped, and checked my rearview mirror. There was a truck, who clearly wasn't going to stop. I pulled off to the side, and he hit the car in front of me.