<i>This is not an external benefit. This, if true, should mostly be reflected in people&#x27;s willingness to take public transport. Of course, people taking public transport are in my experience usually of the most dubious mental health. So that&#x27;s concerning.</i><p>What you&#x27;ll find is that people use public transit in cities where its convenience outweighs the convenience of a car. In cities where that is untrue, only those who can&#x27;t afford a car use public transit.<p>Which is to say that public transit isn&#x27;t somehow magically better than auto travel by virtue of some fixed aspect of public transit.<p>It&#x27;s better when it&#x27;s better, which may sound like a tautology, but is actually just kind of an obvious truth, evidence for which is available all over the world.