I was about 8 years old, and my dad left me in the car for a minute to get something at a store. I was playing my gameboy, and all of a sudden I hear tire screeches and screaming outside. I look out the back window, and a cube van had just ran over a little kid, no older than I was at the time. He just lay there, and his mother was just screaming, screaming. I just watched, I couldn't do anything, but the worst part was when the ambulance came. The whole time I was hoping the kid was going to make it, but the ambulance just sat there, it was in no rush, the kid was already dead.
This is why I always made sure to hold my little sister's hand in parking lots, kids running in parking lots are serious fucking business.