06/20/2011 08:37 am ET | Updated Aug 20, 2011

ZEHST, Hypersonic Jet, Revealed At Paris Air Show

A new hypersonic jet, dubbed ZEHST for Zero Emission Hypersonic Transportation, was revealed at the Paris Air Show on Sunday.

The plane, which debuted in mockup form, will reach speeds of 3,125 mph, or roughly four times the speed of sound (Mach 4), the Daily Mail reports.

Seen as an heir to the Concorde, the plane will be propelled by a mix of hydrogen and oxygen, making it virtually emission free.

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