@fdr. In the proposed design 35T of 76T MTOW are battery mass. How good would such a design perform with normal Jet-A1 engines. The electric motors will need more mass than comparable jet engines, so you compare a fuel tank with batteries. 1500 battery lifetime cycles are not much for an passenger plane. So you think that the airline is willing to replace the battery set 20-40 times during the airframe lifetime? I think if there is no more crude oil to find and we are in a Mad Max type of world, those electric planes might be economic. As current Airbus or Boeing CEO I would not loose sleep on that competition..