I figured that battery weight would make electric planes unworkable - looks like I had it wrong. More about this plane here and possible uses for electric planes here.

Thomas Jullien / EADS via AP
This photo provided by EADS shows an unidentified pilot aboard The Cri-Cri, the first four-engine all-electric plane during its maiden flight, Thursday Sept.2, 2010 in Le Bourget, north of Paris. The Cri-Cri is the latest effort to develop a battery-powered aircraft with performance comparable to light, piston-engine airplanes. The Cri-Cri's lithium batteries give it 30 minutes of autonomous flight at 66 mph (110 kph).