close...it's because of a lack of WALKINGhttps://twitter.com/ComputerLuve/status/946078842904555520 …
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Musk's idea of loading cars onto sleds to run in autonomous clusters through dedicated tunnels is just reinventing the subway but with a metal shell around every passenger (which is why it will never be able to move as many people per hour for a given width of ROW)
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