People asking to properly account for the negative externalities of car ownership can be construed as a war on cars through taxation, or as a removal of a subsidy. The only difference is framing.
Car ownership in the US is ~90% (more than one per adult). In The Netherlands it is ~50%. They still have a car per family for longer trips, but they don't need them for every trip, so they use them significantly less.
That bubble is 80% of the country.
The war on cars is mostly about building more neighborhoods like that.
The reason we dont have walkable neighborhoods is that we outlaw them nearly everywhere. Trying to build one requires not only planning and getting the money but changing the law where you try to build it.
So those in the countryside might be badly effected by a car ban imposed by urbanites.
It's a similar effect to the way policies tend to get made that are good for the middle class but bad for the poor.
Why do we have such good and extensive roads in rural areas with such tiny tax bases? Because cities pay for it. Telephone services, electricity, broadband... all these are hugely expensive and inefficient in rural areas and need to be funded by the productivity of cities, which we gladly do.
Meanwhile rural areas have outsize weight in legislative bodies, and often make explicit laws banning cities from running in that they want to.
> I take it you're American? (Pretty much no one else days "we" to include anyone they're talking to)
I can't think of any country (that has a rural area) where the statement wouldn't be true (although I could picture a counter example where the road infrastructure on specific rural areas is paid through export taxes and not city surplus, just none come immediately to mind).
I've seen for example NY politics around transportation, where people that live in the city predominantly use public transport, but any attempt at traffic calming or providing more space for people "at the expense of cars" is an uphill battle because people from surrounding areas predominantly drive into the city. The irony being that following a "park and ride" model would make the city more appealing, including for those that must drive.
Having a bus coming every 5 to 10 minutes in some random place in Nebraska is never gonna happen, but not having that in a city like Seattle, San Francisco or even Los Angeles is ridiculous.
Look at the context, OP at the top of the comment tree. They are explicit in asking for a ban, not merely making alternatives more attractive.