Unfortunately, scale is the essence of the problem. Not to mention the "bustle" extending past the rear wheel. You do raise a really interesting point, though: how would Elios fit onto a standard car carrier, which has two rails and no center bed for the upper deck? Initially, this wouldn't be a particular problem -- flat beds would work -- but when the volume comes up, greater capacity (i.e., double decker) transport will be needed. Otherwise the shipping cost WILL be about $750!
If you look at the photo of the P3 on RT66 on the Elio site, it give you a really good idea how much room you'd have to "nest" two cars in the right-hand lane -- because the truck is less than one lane wide, so you'd have to do it in that space.
The car carrier question has actually been asked and the answer we have heard is that they have a transport dolly system planned for the rear end. The way I understand it is that for transport the rear wheel is removed and in its place is bolted a dolly with wheels on the ends which match the front wheel track.