I think that the fact that this is a city state is a bit of a red herring here. It's like living in Manhattan/Brooklyn and cost of owning a car in such location

I think that the fact that this is a city state is a bit of a red herring here. It's like living in Manhattan/Brooklyn and cost of owning a car in such locations will naturally include cost of parking space. So this is really a conscious decision to use taxes to limit cars for the majority of people while letting the rich have one but I suppose it'll always be that way.