I changed my mind. This is the ultimate mobile office. When I was down in Louisiana earlier this year a contractor had a similiar set up. This one that Airstream makes has an observation deck on the roof, a conference room, four seperate offices with 4 computer stations and a WiFi setup that can provide internet access for up to 150 laptops. I like it because I can write the whole thing off.
http://www.airstream.com/product_line/ambs/home.html