Feeling the sheer power a jet engine has to generate just to lift a big plane has for sure air industry focusing on the roots: they move people. Move it as it makes sense, and trains and ships are the only possible future for mass movement. Tesla is trying to solve the automaker’s problem, not the transportation one. I hope aviation doesn’t follow the same shortsighted path. Physics have limits and we should take them into account, oil energy was good as it was available but we have to be realistic.