I ran across this interesting article. Like some other phrases, it doesn't mean what you think it does.
Quote
As a two-word summary of a complex movement, "ban cars" is inaccurate and incomplete. Still, there's no question that many community advocates, urban planners, and policy makers around the planet want to challenge the automobile's current status at the top of our transportation food chain. Loosely, slightly humorously, and for lack of a better term, we might call this "the ban cars movement," a name that comes from reappropriating a criticism frequently leveled at those who speak truth to horsepower: "Silly bike people. You'll never ban cars!"
https://jalopnik.com/what-i-mean-when-i-say-ban-cars-1849122955