You'd have to be able to convince the car that you're able to provide DC charging. Far from an impossibility, but a very roll your own kindof system, and you'll

You'd have to be able to convince the car that you're able to provide DC charging. Far from an impossibility, but a very roll your own kindof system, and you'll likely need some beefy DC/DC converters to do so. You could also, similarly, subvert the car entirely and just disconnect it from the car, charge it from the panels/DC converter, and reconnect it when finished.