It doesn’t. Public transportation only really works in dense environments. The rub is that the default mode of development across the US has been suburban sprawl, which basically makes the “last mile” - from the bus/train route to your house / business / shops - impractical.

Best we can do given this state of affairs is build good transit and densify around the stops with infill development. Continuing the pattern of sprawl just makes every problem related to transportation harder - longer commutes, more traffic, higher amount of energy consumed to get from point A to point B.

Anyway, hope this battery tech works out because a lot of us are stuck with expensive personal vehicles as our only viable option given the way our cities are laid out.