Pittsburgh is severely restricting motor vehicle access to its downtown during the G-20 Summit. It may be the city's first car-free day, and one I.... Pittsburgh is severely restricting motor vehicle access to its downtown during the G-20 Summit. It may be the city's first car-free day, and one I suggest the city continue. Of course it's not out of any notion of climate change awareness that's changing the notion of a steel city to one of a still city, but those downtown during the summit shutdown will experience and perhaps even appreciate how the quality of life can be improved when cars are removed. Hey car-free by default Pittsburgh, go back, Jack, do it again! Read more in the Post-Gazette