My hope is that your mobile bedroom/living room/office drives around and plugs into shared, communal kitchen/laundry/exercise/living room areas. You do your work during the transit portion and spend your free time enjoying the destinations and other people.
Cover the roof with solar panels (say 40' x 8' = 10 x 500w panels = 5000 watts of electricity). 8h x 5kw = 40kwh.
If the battery pack was a 1000d, you could move with a full charge once a month for free.
Or you could use it for living too (fridge, range, etc)