You will need a 6.5 x 14 long open trailer to be on the safe side. Or get an enclosed trailer 6.5 x 14 /16 long.
Here's how I intend to get mine home from the marshalling center. https://www.uhaul.com/Trailers/Tow-Dolly-Rental/TD/
Sign up for the blogs or just check them out on the Official Elio Motors Website. On June 15, 2018 Elio said this: https://www.eliomotors.com/hitting-the-open-road-with-elio/
This is an excellent way tow any front-wheel-drive autocycle, assuming that the vehicle is to be towed a few times/yr. With dolly-towing, the rear tire will be subject to the same tread wear as if it were being driven.
Just remember... Those tow dollies don't follow directly behind you like a regular trailer... those front tires turn!
Not too fast, it was on the boards that the possibility to pick up and drive home directly from the factory, with a stay-over package deal from the casinos , and tour the plant (fly-ins only), and yes you will still pay the same rate shipping and handling as anywhere else in the lower 48. I thought it would have been so cool- probably could have sold it at a premium on the drive back home to Seattle