This is a tired old argument that doesn't stand up to scrutiny. The majority of people live in cities, not rural homesteads.

Once upon a time we didn't have the interstate system, but FDR created the New Deal, and with that the federal government created the interstate highway system we have today. We can do the same for rail, but the automobile lobbyists won't allow it.

I'd argue that the interstate highway system is probably the USA's greatest accomplishment, and one of the greatest public works projects. FDR sold it by framing it as a national defense initiative.

Maybe we need to use some of that national defense budget for public transit? Sadly, I don't think we'll ever have a politician with the kind of gumption necessary to save ourselves from ourselves.