Just Jeff: Articulated is just that, it swivels or turns at the hitch. The picture is more on the order of as box truck. I suppose you could extend the frame to include an RV body. Semi is just that, it is semi trailer semi tractor or puller.
Originally I was trying to invision some one re- doing a semi trailer, (standard fare), into a RV and pulling like a standard freight hauling semi truck. I thought this would be a novel idea, have never seen any one do that. I have seen lots of the pictured rigs, they are beautiful, but not a road running semi tractor trailer configuration. Hope this clears up my thinking. Just sayin
