We're driving down three-lane Highway 100 in Wauwatosa, WI., when a man's trimming his hair in the back while at the stoplight. He glances at my husband and me, winks and raises his thumb. T and I smile politely and nod at him. "I hope he finishes before the light changes, I blurt. We're in the right lane as the green Toyota driver crosses the center lane where other cars block our view when the light changes to green.