Green Flight Challenge

Pipistrel-USA Pilot David Morss, left, CAFE Foundation Weights Chief Wayne Cook, 2nd from left, and Weight crew member Ron Stout look on as Pipistrel-USA Pilot Robin Reid is weighed-in during the 2011 Green Flight Challenge, sponsored by Google, at the Charles M. Schulz Sonoma County Airport in Santa Rosa, Calif. on Monday, Sept. 26, 2011. NASA and the Comparative Aircraft Flight Efficiency (CAFE) Foundation are having the challenge with the goal to advance technologies in fuel efficiency and reduced emissions with cleaner renewable fuels and electric aircraft. Photo Credit: (NASA/Bill Ingalls)