My goal is to build/modify a trailer that will be able to be pulled by over rough terrain. When I decide to get away, I want to really get away. But I want to sleep indoors and have air conditioning and heat. The problem is that most off-road trailers are not built to sleep in and most travel trailers are not built to be pulled across abusive terrain. It's a tall order, but it's been done many times.
Here are some pictures of the direction I am headed.


But it will need to be able to be pulled over terrain more like this.


The main reason I am here is to get ideas concerning air conditioning, heating, and finishing the inside of the trailer. I've got a pretty good job ahead of me, but I doubt I will even start the build in the next year.
So, who here has capable off-road trailers?