> Quite ironic to call AVs "pie-in-the-sky," then propose a gargantuan fixed infrastructure overhaul (which has been consistently mired in inaction for decades) instead.

Action happens, but it's hard to spot:

https://youtu.be/XOpjDSUmPtU?si=VC50ougKXQJp4nSz

https://youtu.be/PUnRr69GHJg?si=nopp1t0Sagj_YnXi

Many places are adding roundabouts, bike lanes, etc.

It's just slow and in some places they still don't get it (the South, Texas and Florida in particular).