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A comment on Ask HN: What startup/technology is on your 'to watch' list?. Parent comment

Re:Ask HN: What startup/technology is on your 'to watch' list? by abainbridge on Saturday May 23, 2020 @07:59AM (#23282223)
There were automated railways 30 years before that too. https://en.m.wikipedia.org/wiki/Automatic_train_operation
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