Refrigerated trailers powered by a separate on board diesel engine have been a thing for decades... attaching a small gen to a small charger that supplies more

Refrigerated trailers powered by a separate on board diesel engine have been a thing for decades... attaching a small gen to a small charger that supplies more long term average KW than the truck needs, turns an electric truck into a hybrid, for those ice road guys. I would not be surprised to see something on a small scale for u-haul type rental where a rental trailer would come with a small gas generator and a SAE J1772 charger connector on a cord giving you infinite moderate speed range, or at least infinite until 100 miles after you run out of gas. Possibly people would rent those trailers to travel long distances even if they have nothing to actually carry, just to get infinite range. For most of the population, traveling very long distances is very unusual. Renting trailers is a COTS business model, ditto renting generators, and even the business model of renting medium size building contractor generators mounted on a trailer. Other than adding a weather proof fairing, a larger gas tank, and a COTS plug in EV charger, there's nothing obscure about this fairly obvious future business model. You might need a software update for the car, so the car understands its safe to drive away with the charger cord still attached.