I had trouble visualizing this one. I thought the van had a left and right rear door. It doesn't, it was a hatchback. The front wheel broke and the forks bent on the rear bumper, causing the bumper to fling out left and right. The bike punched a bike shaped impact on the rear hatch, and pushed it to the backseat. The rider launched through the rear hatch window, and into the front seat (and back seat), and stayed in the van. Probably bounced off the van's interior roof. The bike rebounded, exiting the vehicle, and skidding to a stop on the side of the road. The rear window must have been intact when he hit it. Frankly, the rear hatch window saved his life. It slowed him down just enough.