DrewE wrote:
I see you've gotten a lot of good advice and information, but oddly not a lot answering the specific question (about difficulty traveling in a motorhome).
While it would probably be more comfortable than a car, a motorhome is generally not at all ideal for an incapacitated elderly person. The entry to most motorhomes involves a fairly narrow door and several relatively steep steps, and the interior is often rather tight, precluding navigation with a whelechair or walker. The toilets are often lower to the floor than normal residential toilets, with little room to maneuver around them.
A class C motorhome is not going to give an exceptionally smooth ride, though of course a lot depends on how rough the roads are. A diesel pusher with air suspension would be a nicer ride...but finding one to rent might be a big challenge.
That's not to suggest that it would be an impossible plan, only that in my opinion not as easy as it might seem at first. I think taking the train would be a lot simpler and more comfortable and have better facilities for a disabled person. Even a large sedan with lots of back seat space would in my opinion likely be more practical.
