Anyone know why farm robots like this run on 24V batteries rather than petrol/diesel? https://www.autoblog.com/2020/02/11/agriculture-naio-weed-picking-robot-autonomous-farming/ Couldn’t the manufacturer simply fit a generator transformer inside? In fact, why aren’t more (electric) machines designed to be powered by fuel for +300% running time, but ship without an engine and simply allow the user to fit a portable generator onboard? Basically just ship with a mains plug and a rack/housing for a generator. Any idea?