How about a trailer that contains a battery pack big enough to last your whole trip? Going 600 miles? 100kWh trailer. 1000 miles? 250kWh trailer. Drop it off a

How about a trailer that contains a battery pack big enough to last your whole trip? Going 600 miles? 100kWh trailer. 1000 miles? 250kWh trailer. Drop it off at uHaul when you get there, and pick up another one for the return trip. Of course, a 250kWh battery pack would be a lot more expensive than a diesel generator, but it would involve much less maintenance and wouldn't risk disastrous user error.