[unethical_ban]

It's easier to get around on bikes than walking. The easier "not using a car in an urban area" is, the better.

Building bike lanes can also be used for scooters and other kinds of non-auto transport.

Finally, mass transit is an order of magnitude more difficult to plan and implement, as effective MT needs to not only coexist with vehicles, but pre-empt them at intersections. Otherwise, they're slow and no one uses them.

Most cities in the US will never have a subway, so the only option is light-rail or protected bus lanes.