A Swiss team planning to complete the first round-the-world solar flight next year unveiled a new version of their unique 'Solar Impulse' aircraft, which they say could remain in the air indefinitely.... more 
A Swiss team planning to complete the first round-the-world solar flight next year unveiled a new version of their unique 'Solar Impulse' aircraft, which they say could remain in the air indefinitely. (April 9) less 
1 / 1
Associated Press Videos
Wed, Apr 9, 2014 1:40 PM EDT