Driving along a busy street today, I see a pedestrian walking along the pavement on the other side of the road, with his mobile clamped to his ear. He gets to a pedestrian crossing, stops, and turns as though he wants to cross. The car in front of me stops to let him use the crossing. Pedestrian continues to talk on 'phone, does not set foot on crossing. Car ahead of me moves on. I move forward to the crossing and stop in case the pedestrian has changed his mind. He hasn't, so I move on as well. The pedestrian, still yapping on his mobile, turns away from the crossing and continues to walk along the pavement, apparently totally unaware of the frustration and confusion that he has left behind him.
And people claim that talking on the 'phone does not distract them.