I suspect that most car owners don't really have an emotional attachment to owning a car, they just use it as a tool. However there is also nothing wrong with enjoying driving either, I don't see any point in telling such people that they are evil or something. As long as there is good public transport most people will just use it anyway which will naturally reduce amount of cars on the roads. And I doubt that even passionate car enthusiasts really enjoy driving in a city so many of them will use public transport too, and only drive when it's enjoyable (on autobahns or whatever) or necessary / more convenient. Which is fine, this option should not be taken away completely.