Paris city centre goes car-free for a day
Would not having cars in the small centre actually clear up smog in a couple of hours? I would suspect that changes in weather (wind/rain) would have a far greater impact on air pollution. Along with the notes of happy people, I'd imagine this is more a psychological effect. Cities do seem pretty neat without cars (judging from when I've been out during crises and there's been no other traffic).<p>Also: "emboldened to cycle in from the eastern edge of the city without a helmet" - I'm not sure, but are cars a massively dominating factor in bicycle safety? I'd imagine there's still risks, like hitting someone, or a curb, where a helmet might come in life-saving.