We discussed with our credit union finance officer, was approved for the loan. They requested a buy/sell agreement signed by both of us *private seller,and a copy of their title. When we went to look at it in person, we had a cashier's check payable to the seller. In our case, we did not go ahead and purchase, so we returned the check to the credit union and they closed out the loan ( showed as paid in full on our credit). When we did find another motorhome a month later, they did a new loan and paid the small dealer where we purchased it.
Temporary plates were available in the other state for a small amount that would have allowed us to drive legally back home with the motorhome if we had purchased it. We then would have titled and paid sales tax in our home state. Contact your agent regarding the insurance.