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Right now roads are designed for "human sensors." At some point we'll need to redesign the roads for new kinds of sensors. I have no idea what this will look like, maybe all the roads will have RFID in them or some other tech. I think that's the hurdle we haven't gotten past yet, recognizing we need new roads.



Considering we can't seem to pay for our existing road infrastructure, I don't think this will happen in the next 20 years.




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