posted on Jun, 25 2010 @ 06:14 PM
reply to post by Romantic_Rebel
How exactly is this thing green?
Because it has green paint on it?
That's not normally what people associate with "green machine" these days, right?
I thought supersonic aircraft had terrible fuel efficiency per passenger-mile compared to subsonic jets, the reason being that aerodynamic drag
increases dramatically with velocity?
The only thing I see is "no sonic boom", well, that's nice, but I wouldn't call that "green" I'd call that "no sonic boom" or maybe