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21 comments
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I took a vertical self driving car to my hotel room. It worked fine because it runs in a controlled environment with no obstacles.
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One of those vertical trains?
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not a train, its a car. a single unit not connected to any other passenger vehicle.
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So a trolley
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not a trolley. trolleys don't move vertically, they move horizontally.
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A vertical trolley! :)
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21 comments