In this chapter I consider how local politics shapes policies that promote or impede green mobility, including walking, cycling, and public transport organized around compact, high-density, car free and car-lite urbanism. I refer to municipal or city-scale politics and examine two aspirational green mobility cities, Copenhagen, Denmark, and San Francisco, California to help understand why green mobility transitions have been slow to realize in even the most promising localities. Despite different governing structures and histories, the politics of green mobility in both cities is remarkably similar. In both cities there are three broad factions demonstrating ideological difference over green mobility. (1) A left/progressive political faction promotes green mobility as a public good that government should actively promote. (2) A neoliberal faction, sometimes labeled “moderate” in both San Francisco and Copenhagen, also promotes green mobility, but with a market-oriented, deregulated hue, especially on housing and real estate. (3) A right/conservative politics of mobility expresses skepticism towards green mobility transitions and seeks to preserve car access to city spaces. I highlight how each mobility ideology is operationalized through debates over green mobility, including housing, in San Francisco and Copenhagen during 2022, two years after the Covid-19 Pandemic first locked-down cities.