Sorry I forgot to mention, I travelled from Toronto to Pasadena and back 10,000 Km in the spring, I got a quote for a RV . Without gas , food, I was being quoted $6-$8k. We just drove in a small car and stayed in hotels for half that price and I can assure you we saw a slice of the American Pie doing it that way.
We are going to buy a RV next year, but they are really expensive. But I think for our photography needs , just the ticket.