I've actually been looking into refurbishing a newer railcar and kitting it out much more like a home. There's a lot you can do and equipment like older Metra gallery cars along with more recent commuter cars are an excellent starting point.
This seems really neat, actually. While it seems it would be a bit more expensive than you'd think, if you loved railroads then it would be a cool thing to own.
I guess the only restriction would be having to hook into an Amtrak train/route, but otherwise I think traveling North America by rail could be pretty interesting.
My cost comment comes from seeing cars "surplus" for a few thousand dollars, but I'm guessing they might need significant upgrades to be eligible to hook up to Amtrak, not to mention being comfortable for the owner.
