Solar Impulse plane starts bid to cross US

The Solar Impulse craft will stop in Phoenix, Dallas, St Louis, Washington DC and New York in the coming weeks. The team's plane has the same wingspan as an Airbus A340 but weighs only as much as an average car. via Pocket http://www.bbc.co.uk/news/science-environment-22369680#sa-ns_mchannel=rss&ns_source=PublicRSS20-sa