LarryB, Please read the article again!! It's say's that the new plane is like 4 times faster then the new G650, and the Concorde only flu between London and New York City because of the Sonic Boom. Lastly it was the X-54 that was grounded in 2003. Before you write a comment about an article make sure you understand the article first, because it is your writing that is c*ap!!!!!!!