Greener Skies: Quiet, Fuel-Efficient Airplanes Race in NASA Challenge

This past weekend, a NASA-sanctioned 400-mile "personal air vehicle" race was held in Santa Rosa, CA, to see who had created the quietest, most fuel-efficient plane that's still reasonably fast. Those involved hope pushing these ideas forward will make personal airplanes cost effective someday. These PAVs run as quiet… » 8/12/08 9:40pm 8/12/08 9:40pm