People only look at the purchase price, however EV will cost you one 10th of maintenance cost versus ICE vehicles, not talking about the cost to charge, especially if you charge at home & a bonus if you have solar panels. Can't do this with ICE vehicle, it would cost to much to drill a oil well...
From what has been reported on the Ford Lightning using the battery to power equipment, not much. Check out Now you Know or Sandy Munroe, they have tested it.
I think Elon should close it F...g mouth & end the Twitter deal, which is causing him & shareholders to have extraordinary pressure from from politician, rival legacy auto & everybody else that hates Tesla & us, the followers!
There are a few RV's which has batteries built-in the camper such as Airstream, Pro-Lite Campers, here is a link, New ultra light trailers manufactured in Canada | Roulottes Prolite if you want more informations.