i have an underbelly generator try to run the gen when driving. its hooked to a battery charger and i'd prefer to stop with a full charge, rather than listen to the gen once stopped.
on my last outing, the last piece of food left in the freezer on the way home was a frozen lasagna. i turned on the generator, stuck the lasagna in the oven and drove for the hour that it needed to cook. we stopped at a rest stop, ate and were back on the road in no time.
the generator runs the rooftop air, so if its hot, its running.
my generator is also pretty loud. Seems my neighbors prefer i use it on the road as well.
running the generator.... i get about 7mpg on the highway, without it, 9ish.