We’re dependent on our cars because of freeways and the decisions made around building them. Now imagine a future where we don’t need to drive our cars every day. What would it take to decommission a freeway in San Diego? That is the premise explored in a new podcast by KPBS called “Freeway Exit.” The first two episodes of the six-part series are available May 9, followed by a new episode dropping each week through June 6.