This is interesting. The place where I had my generator serviced told me that the Allen Bradley Corp. here in Milwaukee had an Airstream Bus they used to take people back and forth from the airport. Then I met a guy who was mechanic for Allen Bradley and worked on the bus. No one seemed to know what happened to the bus after A&B sold it. Maybe this is the bus. Airstream made several different configurations like the funeral coach, a dentist bus, the astronaut's bus, and I heard there was one outfitted for some kind of agricultural field work.
1994 30' Excella 1000, Chummy III- Ford Excursion- 7.3 Turbo-diesel