> Venturing far away from the charging infrastructure (camping, rural road tripping, jobsites/camp) is risky. If you run out of gas in the middle of nowhere, you can get a ride into town, fill up a jerrycan with gas, and then extricate your vehicle.
A 5KW generator costs less than 2% of the price of the average new vehicle and is a useful thing to have in a place that doesn't otherwise have any electricity regardless.
Meanwhile you then don't have to buy gas the 99% of the time you're not camping.
Would be best to have a modular generator for an EV, that would allow slower but practical charging while on the go or at rest. This would be basically a series hybrid with modular generator, not popular due to lower efficiency AFAIU. Just explicitly design for lower performance when battery critically low and is charging on the go.