If you find you need a U.S. address for domicile purposes, you might be able to go the route of many full-timers and join a club such as the Escapees that allow you to use their Livingston, Texas headquarters as a domicile. Alternately, you might be able to domicile in states such as South Dakota or Montana whose laws seem to cater to full-timers. Before deciding on a domicile, however, check on driver licensing, sales tax (Texas charges 6.25% on the actual sale amount for a vehicle), insurance rates, etc.
We have friends from Denmark who do just what you are describing.
Rusty
