Had that "ground burner" on a day cab and HATED it. Constantly getting exhaust into the truck at traffic signals, or the really rare occasion that I would be sitting and idling for a bit. And no, there was no exhaust leak anywhere on that tractor. But if air currents happened to be just WRONG, it would take that exhaust right into the cab.
Now while I may have diesel fuel in my blood, I really don't like to have diesel fuel in my lungs!
my dad used to have this hotrod that was parked all winter every year in a garage of course. one year the mice had stuffed dog food up the exhaust pipe for some reason. it was SO COOL when we started the car and the exhaust pipe suddenly became a cannon!