You have also a good public transportation system in New York. There are many big cities with much worse traffic than NYC but there are simply no alternatives to cars.
Do NYC subway stops all have functioning elevators yet?
If not, then it’s not a “good” system. It’s a good system for single adults carrying their Manhattan Portage bag. Not so good for kids in strollers, carrying groceries for a family, people in wheelchairs, elderly with difficulties on stairs. It’s not a “good” system at all.
I've never been in a NYC elevator that didn't smell like human waste. Even if all stations had elevators, the immense heat on the platforms seems dangerous for babies and seniors. I always bring a fan to keep the little one cool. Too bad we can't seem to elect someone that will fix our subways.