Dan- when I was very young, I used to ride with my dad on some shorter trips (he was a truck driver).
One time, on the way into Phoenix (at 11:00PM or so), a guy pulled out in front of us. Long story short, we ran up on the car (it was a big Olds and we were doing 65MPH or so). It took us a long time to get slowed down, and we had no steering (because we were on top of the car)....sparks flying everywhere...we ended up in the ditch.
We got the truck off, and only had a broken headlight and some chrome damage on the bumper. The car was a pancake.
Those (drunk) guys were very lucky...they lived. They were in the front seat, and our front bumper was right up against their necks.
That's my one and only truck story.