Policy is decided by people. "Car-centric culture" is just a description of the material status quo, much of which was built by people who are dead, who have changed their minds about cars, or who see different conditions in their city and now want a different approach.

An orientation towards adopting new ways of living when the old ones become impractical or harmful can be just as part of a person's "culture" as a piece of technology.

> Policy is decided by people.

Well yes, corporations are considered 'people'. I think it was some of these 'people' that tore up the streetcar networks in order to replace them with buses.