The Swiss-built Solar Impulse 2 airplane continued its fuel-free, round-the-world odyssey early today with what’s expected to be an...
From Oklahoma to Ohio: Fuel-free Solar Impulse plane crosses America’s heartland
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Solar Impulse gears up to resume fuel-free flight around the world in Hawaii
More than a year after the odyssey began, the Swiss-led Solar Impulse project is ready to resume its round-the-world, solar-powered airplane...