Imagine the helo landing next to the bowser and asking for 37 Coulombs of electrons, please.
The problem with electric motors is how to store the electrons. We all know that only round electrons can roll through wires, but they are not easily stacked up.
Flat electrons are stacked into batteries, but need a convertor to change their shape into round electrons to get into the wires. So, will this helicopter run on round or flat?
And what if, by accident, some of the coloured electrons (which normally run around in neon signs) get into the engine? Will it leave coloured trails in the sky? Might be handy for airshows, though...