10 April 2014
The Solar Impulse team unveiled its Solar Impulse 2 plane yesterday at Payerne Air Force Base in Switzerland. The plane is a bigger and better version of the one that made its test flights across the U.S., Europe, and Africa. The plane, which will be used to fly around the world, can theoretically remain in the air indefinitely with its improved batteries and longer wingspan. Bertrand Piccard and Andre Borschberg, who will pilot the plane on its long-distance flight, reportedly say that they themselves are the weakest link now in the project. (Image Credit: Solar Impulse)
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