Has anyone seen one of these before or know of them ?

[ame=http://www.youtube.com/watch?v=eb1-xc4Wm9s&feature=related]YouTube - AEROPLAST adventure or desert camp offroad trailer[/ame]

Nan & I recently attended the Corowa swim-in and dragged a hire camper trailer down for accom. It seems we are now trailer converts (currently have/use RV3), so the homework begins. It is just at the ideas, size, what will work for us (2) stage ATM, but I am leaning toward building one based on a 109 back as it would blend in with the rest of our collection

All thoughts, ideas, pics, pros & cons, witty stories and humour generally (at least) related to my subject gladly accepted.