Helicopters are lucky to get 10 mpg. The range of an electric helicopter is going to make it impractical, and I doubt that's going to change any time soon. Ga

Helicopters are lucky to get 10 mpg. The range of an electric helicopter is going to make it impractical, and I doubt that's going to change any time soon. Gas stores energy in 100x less weight than lithium ion. Electric motors are 2x more efficient. You're still going to need space and weight for ~50x more battery, which is hard to come by...