A mother and son hop on their bike for a ride through the neighborhood, joining friends and neighbors along the way. There are people on unicycles and tandem bikes, tricycles and recumbents—all kinds of bikes for all kinds of riders. Before long, the bikes outnumber the cars and trucks, taking up more and more of the road until they form a parade of sorts, smiling and popping wheelies, ringing their bells, and celebrating the beautiful community...