成人快手

Remember Concorde? That sleek plane with the pointy nose that broke the sound barrier every time it flew from New York to London? It鈥檚 been more than a decade since Concorde stopped flying its high speed shuttle routes. But the days of supersonic passenger flights might not be over. A handful of companies are designing jets that could once again transport people faster than the speed of sound.

(Image: Spike Aerospace's supersonic jet would carry 18 passengers and travel at speeds around 1,100 mph. Credit: Spike Aerospace)