While more infrastructure will indeed just create new wardrop equilibriums (and potentially sometimes make things worse - see Braess' paradox), banning cars is also a bad idea.
Frankly, cars are the most efficient means for individuals to travel - they may result in poor traffic flow on some single links, but otherwise they have huge benefits.
It is also worth noting that banning cars will affect the poor the most negatively. While poor people use cars less as a percentage of their population (about 9/10 the percentage of the amount that the rich use them), there are far more of them. Poor people are often the ones who have to manage multiple cases - a family and a job, a few jobs etc and often are unable to love near their workplace, or to find a (decent) job near their suburban homes. All of this means that the value of a car is much higher for them, as it can be the means for them to manage their more complex life scenarios efficiently (see "Disrupting Mobility" for more details - it's a great book)
Frankly, cars are the most efficient means for individuals to travel - they may result in poor traffic flow on some single links, but otherwise they have huge benefits.
It is also worth noting that banning cars will affect the poor the most negatively. While poor people use cars less as a percentage of their population (about 9/10 the percentage of the amount that the rich use them), there are far more of them. Poor people are often the ones who have to manage multiple cases - a family and a job, a few jobs etc and often are unable to love near their workplace, or to find a (decent) job near their suburban homes. All of this means that the value of a car is much higher for them, as it can be the means for them to manage their more complex life scenarios efficiently (see "Disrupting Mobility" for more details - it's a great book)