Since you want to add cars and trains to your scavenging homeless, maybe you ought to consider other forms of transportation accident -- bicycle? boat? airplane? bungee jump? stilts?
Why we could go on forever!
You could never go this far:
"After a forest fire in one of the Greek islands in the Agean Sea, they found a dead diver, complete with equipment and suit, in the forest. Further investigation revealed that he was fishing in the sea when a fire helicopter picked him up in its bucket. After the autopsy, they concluded that the diver actually was still alive when the helicopter dumped him on the fire. But the fire was strong, and the cause of death was severe burns and choking."