A hell of a time to buy a Class-A pusher...
You might be able to convert your rear engine diesel powered motor home to run on propane.
See:
https://www.fleetwiseservices.com/diesel-to-propane-conversionsPropane is my favorite fuel becasue unlike diesel and gasoline it never goes bad.
My house and 10 wooded acres probably cost me less than a Class-A pusher.