I read an article just a couple of days ago, about Milan taking some pretty drastic measures to try and decrease smog levels in the city. Here's a snippet from the article I read: Drivers in Milan will face a limit on daytime travel three days next week as the northern Italian city tries to bring air pollution down from dangerous levels. No cars, motorcycles or scooters will be allowed on the streets of the city of 1.3 million inhabitants from 10:00 am to 4:00 pm (0900 to 1500 GMT) on Monday through Wednesday, city officials said. What do you think about this sort of initiative? I can't imagine how that would impact people - I do imagine for people working a 9 to 5 then it wouldn't be too bad, since you'd already be at work before the limits and heading home after them, but I can't say I'd ever heard of any cities here doing that!