Concorde flew paying passengers for nearly 28 years between 1976 and 2003, carrying up to 100 passengers at Mach 2 across the Atlantic in 3 hours, 30 minutes. The aircraft is remembered for its speed, its exclusivity, and the experience of flying at 60,000 feet (18,288 m) at the edge of space. Whether it was actually comfortable is a different question, and the answer depends on what the word means in the context of a flight that lasted less time than a drive from Manhattan to the Hamptons on a Friday afternoon. The cabin was narrow, the seats had limited...