I don’t think anyone seriously thinks you can actually get rid of cars entirely, but rather they’re annoyed that everything is built around the idea that you drive everywhere. This is damaging to the environment, human health, and probably even stifles community and culture.
But if they stand up for what’s right then they won’t get reelected so they can actually make things better Our they could maybe actually do the right thing regardless, is not like Mal needed the pension to pay his mortgage.