I really wish that rather than a thing that hooks onto the tow hitch you could rent a whole trailer with a small ~20kW diesel with a significant fuel tank, extr

I really wish that rather than a thing that hooks onto the tow hitch you could rent a whole trailer with a small ~20kW diesel with a significant fuel tank, extra trunk, and perhaps even a built-in compressor-based cooler. Definitely put an extra receiver hitch on the back of the trailer for an extra bike rack, etc. And probably some kind of a roof-rack as well. That way if you're taking a long trip (when you usually need extra luggage) you can also bring all the other stuff. Skis, food, clothes, bikes, kayaks, whatever it is you're doing. It all goes on the trailer. Yeah it's not all that great that it's burning diesel (or biodiesel or whatever) but if you could convince people to drive strictly electric cars the other 355 days a year I think you'd see big improvements in nearly all metrics people care about nonetheless.