[midoridensha]

>My grandfather told me shortly after Kitty Hawk, posters appeared in Manhattan claiming "Soon! New York to Paris in 15 hours by air!" with glamorous people walking toward a Concorde-like airplane.

To be fair, the posters were absolutely correct. It was soon after Kitty Hawk that it became possible and even commonplace to fly on commercial passenger aircraft from NY to Paris in 15 hours or less. Of course, this depends on exactly how you define "soon"...