I logged about 180 miles on Mike's AeroCruiser, and was surprised at how it drove much more like a van than an RV. It has a 1991 Chrysler 360 V8 with electronic ignition and throttlebody fuel injection, and runs out well. There are a few little things to work out under the hood, but nothing too major. Runs smooth, shifts well. I can also verify that the propane furnace works well (it'll cook you right out of the RV if you crank it up), and that the AC unit cools it down nicely. I did a full vehicle analysis for Mike, and came to the conclusion that it is in pretty solid mechanical and structural condition.
I thought about buying it from Mike myself... I was thinking that it'd be perfect for motorcycle track days . I was going to shorten it to 19ft, and make the rear of the vehicle fold up for a covered space to work on bikes. The area behind the interior partition wall would be bike and tool storage (there's easily room for 2 race bikes and a tool chest in there), and forward of the wall would be the 'RV' space with a bed, sink, stove, cabinets/closet, and shower/toilet.
Whoever buys this thing is getting a blank canvas, and a cool rig. It's actually much better looking in person than it is in the pictures.