dennisp wrote: Hmph. Ok maybe I should retract my “too bulky” comment.

How would the jet work? Propeller plane is easy, just electric motors, but we’ve got no burning fuel to inject into a jet engine.

Airliners and air freighters like 747s could substitute a 16 ton electric motor for the jet turbine. The fan is essentially a propeller, so it won’t go anywhere near mach speed. Not having to buy, store and lift ~220 tons of fuel can lead to some real pricing advantages. but I’d expect it to really catch on in new designs rather than retro-fits.