The problem with this particular discussion is that it is not rational. The notion that we continue bear the overwhelming external costs of automobiles in order to preserve the status quo is patently irrational.

Anyone that arrives at the argument without already drawn that conclusion is woefully misinformed.

If you'll accept that conclusion as granted, then we can begin to have an intelligent discussion about how the issue should be addressed. In the absence of that, getting greeted with hyperbole seems most likely.