Just for giggles, that works out to ~17.42 kilowatt-hours per kilogram of mass, just for the pure kinetic energy. Then you have inefficiencies like electricty-

Just for giggles, that works out to ~17.42 kilowatt-hours per kilogram of mass, just for the pure kinetic energy. Then you have inefficiencies like electricty-to-kinetic-energy conversion losses and atmospheric drag to contend with. It's honestly a smaller number than I expected it to be. So I suspect that those inefficiencies add up pretty fast.