July 11, 2012 09:05 pm
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/n6CpNYLeDqU/why-ultra-efficient-4000-mph-vacuum-tube-trains-arent-being-built
Why Ultra-Efficient 4,000 mph Vacuum-Tube Trains Aren't Being Built
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Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/n6CpNYLeDqU/why-ultra-efficient-4000-mph-vacuum-tube-trains-arent-being-built
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