When the red car was hit, it tilted, lifting the front of the other car, which continued forward because of inertia, and then some solid part of the front of the car caught on that concrete lip/beam on the ceiling, so that it didn't fall backwards and down again, but the back of the car was heavy enough that it also held the red car in place, which held it against the ceiling beam, and so, stuck... is my guess.
This picture is inherently wrong, since the crusaders weren't terrorists. Hell, maybe half of them at most were even extremists. Most were just your typical greedy land-loving nobles who wanted the resources and the fame. Plus, politically, Crusades made the Church more powerful. Regardless, the Crusades had nothing to do with terrorism and the picture isn't even funny with its incorrectness.
But what about the intact car on the right!? How would all this happens while that car was there!? >.< I think what they did was to reverse the eyes and the mouth to get this kind of effect? Like... This was a quick fix attempt from on on paint: Seems like a more normal face if you ignore the misplacement and blank parts that are consequence of inverting the parts... Right?