I have actually seen the truck before but until yesterday had never been inside of it and although it isn't torn up or smoked up its definitely going to the detail shop when the mechanical work is done.
Let's just say my buddy's highest priority wasn't a clean truck lol
I had the opportunity to drive one this fall. 450 hp 10 speed. The max I hauled was 87k with it. It would take over a mile and a half to get to 55 mph on flat ground. Then I drove a Sterling with a 330 hp ISM. It felt like it had more power than the MB engine in the Freightliner. That is my take on it.
I drove 3 different trucks with the Mercedes mbe and own one of then never had any problems with getting parts they alway in Stock pretty good power great on fuel I had to replace head gaskets on mind but I know people who has then and never had any issues.