>>>>>The first step is to eliminate cars as a primary mode of transportation.

>>>>The first step is to make it possible to live without a car.

>>>The first step is to set up separated bike lanes and improved electrified bus/rail routes.

>>The first step is to convince the legislature to shift infrastructure funding away from building new roads.

>The first step is to elect the right candidates, build a base of support, and draft an amendment which can get through the next budget showdown.

And so on...although it's more of a sprawling tree than a descending list.