One problem we have encountered is trying to obtain insurance for our motor home and tow car. The motor home has been purchased and is registered (all taxes paid!) in California. The tow car we will be buying at the beginning of our trip in January. We joined the AAA last year and the advice we received was they would be able to sell us the insurance and use our UK driving licenses for our trip. When we went insure our new pride and joy in September they said they wouldn't issue insurance now without a Californian Drivers License! We have a copy of the California Driving terms and conditions and this says we don't need to get a California license as we are non residents.So it seems the AAA's insurance company is imposing it's own rules. Do you know of any insurance company that could help us? both of us have full UK clean driving licenses (40 and 25 accident/conviction free records respectively).
Good news is the info you gave us appears to have been successful. We have spoken directly to Progressive and it seems California AAA has made it's own rules up about quoting for insurance and insisting on US licenses. We spoke this evening on the telephone to Progressive and they have quoted us for RV and Motor car insurance and are prepared to accept our UK license - result!