AdvertisementParis Air Show: A Passenger Jet That Does New York To London In 90 MinutesJune 20, 2011Eyder PeraltafacebookEmailThe model of a future commercial high speed transport system called ZEHST (Zero Emission High Speed Transportation), a hypersonic aircraft using rockets and turbojet engines to take corporate customers from Paris to Tokyo in less than three hours. (AFP/Getty Images)