Last month at the OpenStreetsPGH inaugural event, over 15,000 Pittsburghers came out to play on Penn Avenue and Butler Street. The city was alive with people cycling, dancing, running, hula hooping and unicycling. This movement transforms 3.5 miles of roads into a car-free, city-wide playground spanning from Lawrenceville to Market Square, inviting everyone to get moving on one big open street. It’s a truly unique occasion, with the intention of making Pittsburgh a healthier, happier place to live. Car-Free Travel…