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> but if you'd told me 20 years ago that we'd have cars driving themselves around major cities by now, I'd have been pretty impressed.

Do we have this?

Waymo cars drive through San Francisco constantly, and without major issues.

Aren't they kind of "cheating" since they require the whole town to be mapped ahead of time?

I would say even with mapping still impressive.

Bunch of stuff in maths/sciense I solved with lookup tables and it doesn’t take away that rest of solution is still complex.