Revealing mistake: Just after they dump the tacks out of the window, the Russians' car flies up into the air in a really quite impressive car crash. Just before it flips over though, you can see the huge ramp put in front of it. (00:32:20)
Revealing mistake: In the big impressive car crash, it is quite clear that most of the cars are empty.
Revealing mistake: In the scene at the tent revival, as Cab is ascending through the tent ceiling, a clear plastic sheet can easily be seen.
Chosen answer: No. We only know that he died sometime during his jail term. There's no more explanation after that.