You don’t need a power plant to charge, you just need a bigger capacitor sitting at the gas station that’s been filling up for a while and ready to dump into your car.
If you're highway bound often this may mean faster decay of battery throughout the decade because of which side gets cycled.
Although I was under the impression that the impact on lifespan is much greater the deeper you cycle the batteries, so it might be better to be perpetually topping them up.
You make me wonder if it would be better to charge every hundred miles in your 250mi range rated EV as a way to preserve long term battry health on a long interstate road trip.