Sorry but you’re just passing the same leftist propaganda, that all would be fixed if you took the cars from people. Cars are a fundamental part of freedom of movement and taking them shouldn’t and isn’t the solution for anything at all.

High density zones are just symptom of the city being overcrowded, and for that there’s really no solution. Public transportation, biking lanes, should existing should be the rule, not a bandaid for the fact that the city you live is overcrowded or its design is utter garbage.