So they say…
Engineers working on the project got so far as initial rounds of product development and had begun prototype design before their endeavors crashed.
Had they been successful, a stratosphere-spinning saucer would have been unleashed, boasting speeds of up to 2,600 miles per hour and the ability to take off and land vertically, controlled and stabilised by propulsion jets.
That would have meant a trip from New York to Miami would have taken a mere 24 minutes.”
http://www.dailymail.co.uk/sciencetech/article-2214295/Revealed-Incredible-1950s-US-Air-Force-designs-supersonic-FLYING-SAUCER-New-York-Miami-24-minutes.html
