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Solar plane flies over San Francisco Bay [View all]
"A solar powered plane flies over San Francisco in preparation for a planned cross-country flight in May. The lightweight plane flies at around 3,000ft as it passes over the Golden Gate Bridge. Considered the world's most advanced sun-powered plane, Solar Impulse runs entirely on energy from the sun."
http://www.guardian.co.uk/world/video/2013/apr/24/solar-plane-san-francisco-video
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