Have not even tried the math, but a question. If the trailer had a large battery pack at maybe 48 volts, 500 amp/hrs, and about 1800 watts of solar, how much assist could they provide to the tow vehicle? Guessing it could be done via a 3000 watt inverter powering the ev the same way and speed as a 30 amp outlet. Would it provide enough to be worthwhile?