The Solar Impulse solar plane is seen at the Nasa Ames Research Centre in Mountain View, California. Weather conditions permitting, the Solar Impulse will take off on May 1 and is scheduled to make stops in Phoenix, Dallas and Washington before arriving in New York in early July. The plane will spend up to 10 days at each stop on its journey to showcase its technology to the public, schoolchildren and students who will also have a chance to talk with the pilots.