Honestly, it escapes me what advantage(s) an electric drivetrain would have in an aircraft. As I see it, the main advantage electric cars and motorcycles have is excellent efficiency over a wide range of conditions, which is great for a car or a motorcycle that has to perform well at speeds from a dead stop to high-speed cruising. But an aircraft just doesn't have to do that. An aircraft is at full power to launch, cruising speed for the great majority of the time, and low speed to land. They don't have to deal with low speed limits or traffic around town.
The EV's biggest disadvantage now and for a while to come is its weight. Batteries don't have anywhere near the energy density of gasoline, so for similar range, I'd think an electric airplane would be at a big disadvantage in terms of weight -- and weight is a HUGE concern in aircraft. Weight requires lift, which the wings are obligated to provide, which causes a dramatic increase in "induced drag"...in other words, a heavier aircraft will always pay a penalty in speed, unlike cars and motorcycles, whose top speed isn't very strongly unaffected by weight. Granted, an electric motor is probably considerably lighter than an ICE, but to provide good range, you'd probably have to have a massive battery in an electric aircraft.