Solar plane begins 1st transcontinental flight
Switzerland Solar Impulse
Solar Impulse crew members pull out the experimental aircraft "Solar Impulse", HB-SIA, for its first intercontinental flight to Morocco at the airbase in Payerne, Switzerland, Thursday, May 24, 2012. Solar-powered aircraft Solar Impulse, the zero fuel airplane, makes its first intercontinental trip with final destination Rabat, Morocco. The prototype will land in Madrid for a technical layover, as well as to change pilots. The Solar Impulse project aims to circumnavigate the world with an aircraft, with a 63.40 meters wingspan, powered only by solar energy. (AP Photo/Keystone, Laurent Gillieron)