Pedestrians walk through an "e-lane" on April 2, 2012, in Philadelphia. Philadelphia Mayor Michael Nutter used April Fool's Day to have a little fun with what he says is a real problem: distracted walking. City officials painted lines and oblivious stick-figure pictures on one stretch of John F. Kennedy Boulevard near City Hall as a jab at pedestrians who keep their eyes on their cellphone screens and not their surroundings.