Yeah that's the key. Not disincentivising cars but to make public transport the obvious answer by making it really good.

They do that really well here in Barcelona. 21€ a month and you can use all the transport you want in the city, all modes. Why would i want a car what's expensive to own, park and maintain and I can only just it when I've not been drinking?

Problem is, making transport good costs money and a lot of effort. Taxing cars is easy and brings money in.