The truck looks familiar. We crewed for an ARCA team for a while, that's where it might be familiar from.
Did you plumb the fuel for the diesel generator at about the 1/4 tank mark?
Started looking for 379 Peterbilt TC, 24' to 30' box, bumper pull--but ended up w/1999 Liberty Coach conversion of 45' Prevost XLV bus. 1,000sf heated/AC'd race shop w/dump station, 50amp shore pwr where bus parks, 3 NASCAR/ARCA race cars & 26' Bravo trailer.