Ha! Maybe not, at the scale of the US it might well be intractable. That said, the Netherlands made such a transition over the 80’s and 90’s so it is possible to some degree. You do need a population willing to undergo the transition though. And it’s not something that’s done overnight of course.

I just found it somewhat ironic that instead of considering alternatives, people would rather hold out for self driving cars, which may never happen, to reduce time wasted in driving.