The alternative is the status quo of the past half century where we pay lip service to city livability then expand our automobile-dependent suburban sprawl outward while adding one bus line that runs once an hour until it's cut for low ridership
Defeating the status quo always takes a motivated group, and hatred of cars is a good motivator as any. Cars shouldn't be outright banned, but they should be the most expensive and inconvenient option for commuters (which implies building transit infrastructure)