Comment Re:Its a first step, the easy part, ... (Score 1) 67
Admittedly, this is work-in-progress on building something so I should cut them some slack. It does seem tough to get over that energy density x payload = range issue. True that early electric autos were also range-starved, waiting for the better LiPo's to be developed and scaled to cost.
But if the Wikipedia is correct that "106 foot wingspan plane" maxes at 110nm range currently. Not sure what sort of altitude that includes. 110 miles to ride a plane is a tough sell, even if you are just trying to connect a spoke city to a hub city. Like would someone fly from Milwaukee to Chicago...maybe, I guess. That Joby air taxi says 150 miles range, but they are only carrying a handful of people.
But leave it to the chemists and engineers to tweak some more miles. Fundamentally I agree that most stuff on the ground should be powered by electricity (trains, trucks, cars, buses) and stuff in the air could use bio-fuels once widely available.