Comment by blauditore

If you want to disincentivize usage of certain things, money is generally the most effective option. Yes, some rich folks won't be bothered, but even fairly low amounts make most people think twice. Too many cars are a problem in many parts of the world, for a number of reasons (noise, smog, traffic jams, or parking space in cities), so nudging people towards alternative usage patterns is worthwhile in my opinion.