This isn't the truck, but it looked about like this, leaning slightly and spanning all four lanes of the road.
Several amazing things happened. The first is that no one was hurt. The second is that before we could grab our coats and run out the door to help so many people had stopped and jumped out of their cars to offer aid that there was nothing more we could have done. The third is that as we watched out the window we saw the truck driver and the women who had been driving the car that went off the road walking around holding hands.
A couple of hours and a big traffic jam later the truck and the car had both been towed away and I was still thinking about all the people who had stopped to offer help and about the two people who had joined hands in relief instead of screaming at each other in anger.