Boeing's Jets of the Future Will Be 60 Percent More Fuel Efficient Thanks to Natural Gas

Using the moniker SUGAR (Subsonic Ultra Green Aircraft Research), Boeing has been hard at work developing a series of jets that will take us from point A to point B in the future. They've already developed concepts for a hybrid-electric passenger jet, and now with the SUGAR Freeze, they reveal their plans for an… »3/21/12 12:00pm3/21/12 12:00pm