Solar Impulse, the world's most advanced solar-powered airplane, is on its way to Cincinnati, a surprise stop because of weather issues in Washington D.C. The carbon fiber plane has a wingspan of 208 ft. (like a Boeing 747), and weighs about as much as a small car (3,527 lbs.) It can fly day and night without fuel or polluting emissions. It is 80 ft. nose to tail.
See it as it flies