Getting rid of the cars certainly will. There's lots of streets in e.g. Manhattan that simply need to have the on-street parking removed, and some of them even need to have the car lanes removed entirely (the most obvious candidates are 32nd St in K-Town, Broadway between Times Square and Union Square Park, those few blocks in Little Italy with all the restaurants, and similar).

No, because they are still noisy and polluting (a huge amount of air pollution comes from bits of tires flaking off, which is still a problem for EVs).

They're also extremely dangerous (just like gas cars). Crazy people and elderly people sometimes drive them into pedestrians and other crowded areas.