NASA reveals secret supersonic airplane that quiets the sonic boom to a thump

David Frost used it almost to commute between London and New York.

During his career as a broadcaster, Frost became one of [Concorde]
(Concorde - Wikipedia)'s most frequent fliers, having flown between London and New York an average of 20 times per year for 20 years

3 hours flight time compared to 8 or so is a big difference!