I have some friends who bought a similar rig. They sold it because it was too hairy trying to sleep in it when the winds came up. But they are great if you're scared of snakes.
I have a friend with a similar style Turtleback off-road trailer. It's pretty sweet and can go lots of places (we took it to the Maze Overlook and Land of Standing Rocks), but it's still a trailer. Towing sucks, IMO.