Exactly.  The very sad reality is that humans really just were not meant to fly; we're too heavy.  Luckily for us, we're smart enough to burn some hydrocarbons and lift our heave bodies off of the ground.  Artificially limiting this ability using batteries is just silly.<p>If the tech was practical (it isn't right now) or if this project was about developing batteries (it doesn't sound like it is) then fine,  but can we pretty please see a gas version?