Re:wait, don't we have these already? (Score 1)

There are so called "residential cars" (sorry if I got the translation wrong) in Poland. Almost all are converted from old freight/passenger cars. You can even buy one for as much as $2.5k. They're mostly used to temporarily accomodate rail/construction workers. I saw many of them in use in tourist areas as cheap camping accomodation, available mostly for railroad staff. I found some pics of their interior (basic, but probably has everything that is needed - I pass some every day on my way to the university and one of them even has a satellite dish mounted). There is also a short photostory about the lady that bought one of the pre-WWII cars and converted it into a cosy living quarter.