After automobiles going fuel conscious, now it’s the turn of airplanes. Solar Impulse will cater to the rising fuel crisis. The manned airplane is still in a prototype design phase but once launched it will be fun to go around the world in a plane that needs no fuel but the sun. The plane does not maintain a consistent altitude like other conventional planes. During daytime it soars to a height of 10,000 meters to make the most out of the sun light. At night time the plane relies on the batteries and descends to a height of just 3,000 meters. The plane has a wingspan of a bit more than 80 meters and weight just 2 tons. The project is in the design phase and if all goes well then we will be able to see it in air by 2011. Via: ecogeek
