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Have you ever heard of a little thing called traffic? Or something called a "speed limit"? Can't believe this is the top comment on HN. Reddit? Sure, but I ex

• personjerry 10y ago
  Conceivably traffic in the air would still be a problem once we get enough volume, unless we permit cars just fly wherever (huge danger!). Similarly, speed should probably be limited unless we want 200mph cars crashing into a building.