US (and Canadian) public transport is grossly inefficient largely due to land use policy. Public transit only works in reasonably high-density urban areas and can't serve suburbs. Public transit doesn't work here because most places are low-density suburbs.

We can't have effective public transit on this continent without rebuilding our cities along the lines of the larger European cities (e.g. 4-6 story midrise buildings everywhere) or Tokyo (essentially no zoning rules and 4-40 story buildings everywhere), or rebuilding our suburbs along the lines of Switzerland (rural housing clustered around public transit nodes).

There's not an ice cube's chance in Hades of major land use changes ever happening. A society so dominated by reactionaries that it won't build enough new housing just to keep up with population growth is incapable of major change on the scale required to meaningfully change land use policies. We committed to car-only land use decades ago and we're stuck with it.