I used to live along a busy road, and one day a pickup truck pulled out right in front of a big cargo van with 11 people in it. The van slammed on the brakes. It was too late, the van hit the truck. It wasn't real bad, until the 18 wheeler behind the van hit them. The pickup truck flew into the other lane. The 18 wheeler ran the van over, just drove right over it. It was stuck underneath the tractor part of the 18 wheeler, they slid down the road probably 100 yards. 9 of the people died, and I was watching as the pulled them out 1 by 1, and put them in body bags. It was the worst thing I've ever seen. I wish I wouldn't have been so curious as to what the loud sound was and just kept doing what I was doing, then I never would have seen it.