Federalism is the key impediment to a sensible transportation policy, though. Corpo stakeholders drive sprawl. Developers have legislatures captured to a degree that exceeds even the gun lobby. 50 different state governments, with thousands of local governments, with a federal government that is unable to plan beyond the next election - the US is fucked. There are way too many entry points for bad faith actors to wreck a good plan. More opportunities for direct democracy and recall could help, plus rank-choiced voting, plus dosing the water with Wellbutrin to turn off people’s worry about supernatural bullshit, and we might get somewhere.