“What is not clear is whether Boom has solved the problems that forced British Airways and Air France to stop using the Concorde on trans-Atlantic flights — high costs, safety concerns and flagging demand.” United Airlines Wants to Bring Back Supersonic Air Travel.

+ “Boom claims its supersonic jets will eventually be able to travel from New York to London — normally a seven-hour flight — in just 3.5 hours, or Los Angeles to Sydney — typically a 15-hour trip — in six hours and 45 minutes.” The Verge: United Airlines is buying 15 supersonic aircraft from Boom Supersonic. (I’m a terrible traveler, so they could shoot me out of a cannon if it saved me more than half the flying time. Now if they can just figure out a way to shorten the vacation itself.)