The Concorde was once the ultimate in air travel: from London to New York in three-and-a-half hours, the height of speed and luxury at the time.
That time has passed. But a Swiss company, Swiss Space System, is trying to revive the idea of supersonic travel, and make it even faster.
They hope to slash flying time between London and New York to less than two hours.
Technology reporter Tarek Bazley reports from the company's headquarters in Payerne, Switzerland.
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Source: Al Jazeera