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Picture the scene: the London boss places a transatlantic call to your Manhattan office, and orders you present for a face-to-face meeting in his office — in one hour. Sound impossible? Maybe not. Engineers are now designing advanced tunnel construction technology that will allow a bullet train to travel 5,000 mph inside a 3,100 mile reinforced concrete tunnel anchored to the sea floor. Preliminary construction estimates reveal a cost of approximately $12 trillion. But, with more than one billion tons of steel and an equal amount of concrete required to erect the multi-level tunnel, this transportation engineering marvel will take many years, if not "decades" to become reality.
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