Like he said - one more inch to the right, or probably more actually and it would have been curtains. Appears to be an offset frontal collision, the vehicle was already in motion rapidly to the left but he caught the rear end of the semi and it sheared through the right side of the vehicle, Probably didn't get wedged under it, more like glanced off. Fire Department cut the roof off etc to pull him out of there presumably, probably didn't open the door and walk out LoL
Yeah - guess there is no doubt the seat belts work well and the drivers seat is adequately bolted down. Passenger wouldn't have done too well that's for sure.