We live in a world where we mindlessly reach for car keys when going from point A to point B. But what if we didn’t? During this week’s Open Streets 704, the fifth such event to be held in Charlotte, cars are non-existent and streets are for biking, walking and dancing. The city is shutting down four miles of roads through Plaza Midwood, Belmont, Villa Heights, NoDa, Optimist Park and Commonwealth. They’re divided into four zones, each with its own activities: Arts and Science, Family, Green and Wellness. Now, put down the keys.