Those seem to be the people who push the car-less idea the most, because it meets their world view, but doesn't work once you step outside the downtown bubble.
But what I think they want are solutions to the parking, traffic, and other issues that stem from city overpopulation and/or planning mismanagement of cities.
As an outsider I agree cities need to rework how they handle cars (idling in traffic for an hour to go 10 miles, parking being hell, etc.) but it's a specific problem to cities (some more so than others)