I bet its only a matter of time before they fix that tree problem.
I've wondered if any of the modern diesel engines could cause a fire if the conditions were correct. There are times where I turn my truck off in the middle of a regen cycle and my EGT's are well over 1000 degrees. I wonder what would happen if I parked my truck on some of that dry pine with a 1000 degree exhaust pipe. PS I would NEVER park MY truck off the concrete, that would be against the rules!