If you're ever lucky enough to fly a Quiet Supersonic Transport between New York and Los Angeles, you'll have just enough time to get through a movie -- a short one. Instead of the usual six hours, it will be a 1,100mph, two-hour hop. The QSST, as the proposed luxury private jet is known, could be the first civilian supersonic plane approved for overland routes, thanks to aerodynamics designed to muzzle its sonic boom. Lockheed Martin's Skunk Works has been developing the project for six years under a $25-million contract from Supersonic Aerospace International (SAI), founded by Michael Paulson, son...