This article claims that the plane is more efficient, and that the batteries recharge in flight, but it doesn't say where that gain in efficiency comes from.
Hybrid cars work mainly by recovering energy from braking or going downhill to charge the batteries. Planes don't do that. Where do they recover energy?
Hybrid cars work mainly by recovering energy from braking or going downhill to charge the batteries. Planes don't do that. Where do they recover energy?