Unshielded rear-center generator exhaust pipe positioned with approx 12 in clearance above the ground, ignited the exterior of vehicle when generator operated, causing total loss. My safety as well as my pets was put at great risk due to this design and lack of shielding. The problem has not been reproduced of confirmed by dealer or independent service center, however the fact of such pipe getting hot, and nbeing related to the generator was recognized by the dealer. There were no warning lamps, warning stickers near the electronic start switch in the vehicle; no messages or other symptoms of the problem prior to the failure. The design foreseeably exposes owners to fire risk, given owners only recognize the exhaust from the rear side of the vehicle; assume if the engine is off no exhaust heats up enough to start a grass or other fire. But, the majority of owners like myself do not know of any other exhaust outside of the vehicle is present. The shocking 12 inch proximity from the ground; at the rear of a 25 ft vehicle typically parking in car spaces with an overhang of the rear behind the rear wheels or a curb is a ridiculous fire risk to all owners, and the surrounding community. This is a design flaw still inherent in that same vehicle today,