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The hyperloop is dead for real this time
(www.theverge.com)
This is a most excellent place for technology news and articles.
The basic idea of reducing air drag with a vacuum is a good one, but there are so many practical problems with a solution like the hyperloop that it should have been shot down earlier than it was. The problem of thermal expansion across a structure hundreds of miles long while needing to maintain a near vacuum was never solved.