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.
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.