Paris has a sustainable transportation strategy. It is working pretty well and they continue to make steady progress on it, though with miles to go before they sleep. What makes Paris particularly interesting and instructive as a real world example is that for many years it did not, and by the early 70s there were first big infrastructure initiatives knocking at the door that would have certainly turned it from being a city for people into a city for cars. And that particular destiny, by the way, was not just a random series of events. It was premeditated, largely shared in policy circles and destined to happen. At the time, in 1974, the Prefect for Paris (Paris did not at that point have its own mayor and hence a focal point and guardian of that special qualities) famously said (in my approximate but not inaccurate memory) “Parisians are born with two legs and four wheels”. Oops!