(Solar Impulse )
Solar Impulse Airplane Takes Off On a Fuel-Free Trip to Dallas
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MAY 22, 2013
Alan Boyle, Science Editor, NBC News

The Swiss-made Solar Impulse plane set out Wednesday on the record-breaking second leg of its solar-powered trip across America, from Phoenix to Dallas-Fort Worth.
Andre Borschberg, Solar Impulse's co-founder and CEO, piloted thesolar-powered plane through its takeoff from Phoenix's Sky Harbor International Airport at 4:47 a.m. MST (7:47 a.m. ET), and pointed it toward the sunrise for what's expected to be an 18-hour flight.
Solar Impulse is designed to demonstrate a host of clean-energy technologies, ranging from lightweight carbon composites to the 12,000-solar-cell system that powers the plane. The airplane is as light as a typical passenger car, but its wingspan matches the width of a jumbo jet.
Read more: MSNBC News