You must also account for the engine / motor / transmission / drivetrain / fuel tank weight difference you can't just look at fuel weight alone. In ground vehi

You must also account for the engine / motor / transmission / drivetrain / fuel tank weight difference you can't just look at fuel weight alone. In ground vehicles the weight of the engine and transmission and running gear is more than an electric motor and controller with much simpler usually single speed transmission and drivetrain especially diesel. Then there is structural batteries where the structure of battery helps replace some of the vehicle structure reducing wieght. This is why electric cars are starting to be competitive. Planes are somewhat different modern turbine engines are relatively light for their power output and there is not much of a transmission on planes, usually variable props instead and fuel tanks are sort of structural. Although having many multiple props driven by small electric motors can have advantages which would be complicated and heavy to do with a drivetrain in a plane. Still electric planes are far from practical IMO.