The ban on texting while driving for drivers 21 and younger officially goes into effect Friday. If they get caught, the fine is even heftier than running a red-light camera: $200. How the hell are they going to enforce this one? And why the stupid, arbitrary age restriction? Guess us old bastards can still peck away as we roll down the highway -- even with our diminishing hand-eye coordination. Let's not forget the lesson of the BNIM's window display PSA.