A search for electric RV turned up this………
Which does not have an electric drive train.
My idea is to start at the top, i.e. Class A motorhome, using Prius style drive, i.e. battery driven with generator to charge battery, which has already been done by Wrightspeed and fulcrum turbine.
Runs on diesel, propane or hydrogen.
Wrightspeed Range-Extended Electric Powertrains
The Wrightspeed Route powers cleaner, quieter heavy-duty vehicles with more torque and less fuel for local delivery, city buses, and waste collection.
The focus should be on the chassis rather than the house. How much power do you need for led lights, led TV, toaster over, and computer network?
All I am Asking for is $1m for 75% of business.