Yes, there are quite a few people doing this. The concept is called overlanding, which I believe started in Europe. Could start at website called " Two if by land". Martin and Bethany are quite nice and helped me get started.
There are three primary cabin types. Aluminum, composite, and Would.
Would build ="I wish I Would have saved more money for this build"
There are two books you must have:
1. "Motorhome
self-build and optimisation
1000 tips and tricks for anyone wanting to build
a motorhome or optimise an existing vehicle" by Ulrich Dolde (nice guy, recently published in English)
2. "Build Your own Overland Camper" by Steve Wigglesworth (yes, that's his name)
or could get:
"My wife is gonna kill me. Bought another military truck...
How to talk your wife in to another Toy, that will eventually be a camper (Not)"
Better track down some high speed gears if you plan on doing this, unless you are planning on camping in your neighborhood. I would actually start there first. Cabins are relatively easy to find. Gears? Not so much. Plan on $2-3k for these.