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Hyperloop
I’ve been meaning to post this last week, but forgot. Hyperloop is a proposed new transportation system designed by Elon Musk, which focuses on small capsules traveling at high (up to 1200 km/h) speeds through partially evacuated steel tubes. There is a [proposal available online](http://www.spacex.com/sites/spacex/files/hyperloop_alpha-20130812.pdf). I believe it’s all crap, and I’m going to explain why.