This is going to be interesting:
"A new generation of supersonic private jets could trigger a boom in luxury high-speed flight – without the sonic boom normally associated with breaking the sound barrier.
Lockheed Martin’s advanced Skunk Works unit is designing a small, 12-seat passenger jet that would travel at 1,200 mph (Mach 1.8) but which would produce only a whisper of the annoying crack once emitted by the retired Concorde.
The sleek, 130-foot-long QSST (for “quiet supersonic travel”) aircraft is being designed for a Nevada consortium called Supersonic Aerospace International, or SAI, at an estimated cost of $2.5 billion.
Aimed at business executives and diplomats, the QSST will fly at nearly twice the speed of conventional business jets and have a range of 4,600 miles nonstop – Los Angeles to New York in just over two hours.
It could be ready for boarding by 2013, according to the company."