Unfortunately in the US most of the major cities have essentially been designed (or redesigned) around private vehicles, so banning them is not going to happen. However you are absolutely correct - walking through Times Square in NYC is a pleasure (aside from all the guys in Batman costumes) with traffic removed compared to turn of the millennia. I don’t care to bike but the bike lanes squeezing out all the auto traffic have been a benefit also. But would it work in Houston or Denver? Not unless they built a massive public transportation infrastructure and moved the businesses and housing closer together, essentially rebuilding the cities.
The most recent part of Manhattan to be designed was still over two centuries ago in 1811, so we're not going to have that problem at least.
But I think you're over-estimating how hard it would be to get rid of traffic in many other urban cores in the US. You don't need to do the entire city; you can just do the densest parts. It's not that hard to beef up a city's existing bus services and use them to totally replace cars.
They had to really look hard to find a part of downtown that looks like that. If you zoom out a bit you can see how all that parking came to be - the nearby stadiums / conference centers.
But you can compare to, say, Baltimore, where there's barely any surface parking around the convention center there, despite the fact that it's right next to a major sports stadium.
Sure, you can make that comparison, I just don't know what useful conclusion you'd get from it. Maybe property rights are stronger there. Maybe nobody offered enough money. Land in Atlanta has historically been relatively cheap compared to New England.
I have a pet theory that states that land values are higher on the coast mainly because sprawl doesn't have as many places to go, so it concentrates in smaller areas. Atlanta was historically a rail hub, exacerbating sprawl because transport could always move people farther outward. Picture pouring money onto a map, and walls are anywhere it's infeasible to develop the land. The money will spread out where there's no natural barriers. It will pile up if there's a lot of them. Money piling up means increased property values.
I've seen this image before (and many more like it), and it's truly sad what we've done to our cities.
But the good thing is, parking lots are huge opportunities for developers. I'm from DC, and the city has radically developed itself over the past few decades in turning what used to be entire blocks of surface parking lots into massive apartment and office buildings up to ten floors tall. It's very easy to develop a parking lot; that land tends to be relatively cheap to acquire and demolition costs basically nothing.
>"The most recent part of Manhattan to be designed was still over two centuries ago in 1811."
That's not correct. Battery Park City was developed in the mid 1970's.[1] And that development is particularly significant here as it includes a car-free green space in the form of Hudson River Park which begins there. Hudson River Park itself also being significant in that it won out over the proposed Westway Project which would have placed an interstate highway there instead.[2] The extension of Hudson River Park all the way up to the 72nd St Boat Basin is also a very recent and significant development.
FYI, Battery Park City is part of Manhattan and was designed in the 1960s to 1980s, with the land created during excavation for the World Trade Center.