I've seen this before and while interesting, it's not for me. It might be perfectly suited for the Australian outback though.
The problem I have with this type of design is the same problem I have with pop ups...lot's of set up before you can effectively use the trailer. I do like the ruggedness, off road capabilities. The fitted cups, plates and cutlery is nice for keeping things organized. On board hot water is nice as well. But I don't want to have to set up the sleeping area just to get some rest.
I want my trailer ready for me to pull in and be ready to use, lay down, etc. If you pull into a camp area late at night, having to set stuff up just to sleep would be time consuming. My plan is that very little set up will be required...if I am driving down the road and get tired, I can pull into a rest stop and immediately go lay down. The sleeping area will always be made and ready, nothing stored in their while traveling.
But, yes, this is certainly interesting.