This came up on a different link that was discussed here. at 2:25 on this video you see a wrecker pulling a white sleeper tractor, with a rail box sitting right behind it in the middle of the freeway. On the video you can see the demolished cab of a gold tractor (CRST). After doing some comparing of the still pics and the video, along with some slo mo that would do the NFL proud, I believe the guy was pinned between CRST (on the right) and a UPS sleeper pulling a rail container (on the left)
It's a crst on the right as the picture shows and it looks like our container and the borrowed chassis from the rail. Would be interested in seeing the video. Your link didn't post right at least for me anyways