Something would need to be done to solve that. Was an underground highway built? Alien teleportation? A fleet of magic carpets were made available that run on unicorn farts that allow people to get around?

https://en.wikipedia.org/wiki/Train

https://en.wikipedia.org/wiki/Tram

https://en.wikipedia.org/wiki/Bus

https://en.wikipedia.org/wiki/Walkability

Are you really trying to pull a “fuck cars people are dumdums” while blatantly ignoring all the solutions they have proposed over and over again?