A great range extender weighing twenty kilos is available right now, a diesel generator.
It can also double as a air/water heater, emergency power for household or medical appliances, and emits about as much carbon in 30 years as it takes to manufacture a battery pack.
Honestly surprised Honda hasn’t designed a hybrid that’s more generator and less hybrid but I suspect that has to do with air and noise pollution loopholes for generators versus engines.
Nah, the BMW i3 had one of these as an option, as does some Chinese car, with no regulatory difficulties. Also a common arrangement for ‘hybrid’ buses and trains.
