Many people in Europe depend in cars to commute.
I was surprised by your previous comment as I frankly would never see it happening.
Having said that, I did read just yesterday about Barcelona planning something similar, with a pilot in one part of the city. All cars are forbidden and artefacts are put on the street to encourage play for kids etc. Even there, members of the local community are against it ...
The example you mention in Barcelona is called the SuperBlock. The first one was Poblenou. Although it's true it was first met with fierce opposition, it is now a massive success, and local communities are not against it at all:
Here is a relevant quote for the guardian: https://www.theguardian.com/cities/2019/sep/10/barcelonas-ca...
When the first superblock was introduced in 2017 in Poblenou, in the north of the city, it was met with opposition by car owners and also those who claimed it would be ruinous to local business.
However, opposition has faded as residents have begun to enjoy the benefits of a traffic-free neighbourhood. There are also 30% more local businesses than previously and the area has seen a significant increase in the numbers of people making journeys on foot or cycling.