He was driving on the highway when he had a quick slowdown. The driver two cars back was presumably distracted and didn't see the slowdown until the last minute. He swerved out of the way of the driver behind me and smashed into the tractor-trailer next to him and collapsed the right side of the vehicle getting stuck for a few seconds under the trailer, then popping out. There happened to be an officer behind the tractor-trailer and saw the whole thing. There were no serious injuries from the accident.