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> You could built a national network of self-driving lanes for a fraction of that. You could build rail lines and subways in every major metro area.

Most of them will be built by government making huge losses, they will go from nowhere to nowhere and they will not function as intended. The California high speed train is a great example. Not to mention $50K will be put by people but the national rail network will have to built by government (not that they have to but very likely they will grab this opportunity).




Clearly, other governments can do it, so there must be a way for the US to do it too.




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