It's a bit of a chicken and egg problem. If the living space is architected the way it is, people will gravitate towards the most convenient method to access it

It's a bit of a chicken and egg problem. If the living space is architected the way it is, people will gravitate towards the most convenient method to access it (cars). If you prioritize re-architecting you will find it difficult to move people already invested in the depreciating asset which is their vehicle, out of it. At the same time they won't move out of their car until the other transportation options are, if not equally, at least somewhat close to convenient. So basically you need to tug a little on both sides, have fewer people using cars, then it's easier to make changes that affect those cars in favor of greener transport architecture, cycle and repeat.