The Blissmobil are quite nice units. For people on a budget less than 6 figures, a Zeppelin Shelter makes a good alternative, especially since it costs about twenty times less. Granted you have to finish out the interior but they are probably a bit more rugged, a lot lighter (depending on what you put in them) and much cheaper. The smaller Zeppelins fit right on a U1300L and also fit on Sprinter chassis. Shouldn't be hard to build a platform for them to fit on a full size pick-up or Fuso. The larger ones fit on bigger trucks or can be cut down to size. I usually have the smaller ones kicking around at my place.