Not to be outdone, the US Army unveiled plans for an ultra-long range hybrid airship that is capable of flying for three weeks at a time.

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Gulfstream will be chasing it with its ultra-long-range G650, also due out this year.

ECONOMIST: Corporate jets

Since the arrival of ultra-long-range airliners in the mid-1990s in the shape of the Boeing 777 (for which Emirates is the biggest customer), any two big cities on Earth can be linked via Dubai with no other stops.

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Following the introduction of the IdeaPad U350, the 14-inch U450p offers Intel consumer ultra low voltage processors, long battery life and a wide range of entertainment and productivity features.

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