> I suppose one case where I would change my mind is if there was evidence that more affordable underground roads reduced the investment in public transit.
It's Friday night so I lack the motivation to go on a stats-finding expedition, but anecdotally this seems like a circular issue to me. Public transportation sucks, so no one wants to fund it and we invest money into car infrastructure. Traffic gets worse, but public transportation is still bad because we haven't improved it, so we dump more money into car infrastructure, and etc.
I do hear you about the practical realities, though. Most people will drive if they can, because it is more convenient (so long as we can keep building more roads, even at exorbitant prices).
I think there would be far less support if people could see what they're actually spending on car infrastructure. At least in the US, it's currently so fractured it's hard to get an idea. Registration fees, gas taxes, federal taxes that get pumped into highway maintenance, etc. There's no clear "we spend $X on car infrastructure, and we could have really good public transportation for $Y".
