http://www.goodcleantech.com/2007/08/50_milepergallon_plane.php

The 682 pound plane took the NASA-issued grand prize of $100,000 for its light weight, simplified operation and astonishing fuel economy. "Only 682 pounds empty weight complete--it literally carries more useful load, that is passengers, fuel, and baggage, than the aircraft weighs," said Mark Moore, an aerospace engineer at NASA.

Thanks to Dave Conners.

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