Thursday, July 12, 2012

Ultra-efficient 4,000 mph vacuum-tube trains – why aren't they being built?

Ultra-efficient 4,000 mph vacuum-tube trains – why aren't they being built?: "In the 1800s, when pneumatic tubes shot telegrams and small items all around buildings and sometimes small cities, the future of mass transit seemed clear: we'd be firing people around through these sealed tubes at high speeds."

'via Blog this'

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