The idea of a ban on cell phone usage while driving while in a restaurant is just another example of trying to legislate common sense. It didn't work when municipalities passed laws requiring every care traveling at night to be preceded by a man carrying a lantern, and it will not work now.

Technology moves faster than we can react to it with laws. My GPS and my cell both respond to voice commands and I can send and receive messages/email without ever looking at my phone. As djplong has said the roads are safer now than they have ever been. Cars can now park themselves, stop you in an emergency, notify you if you start to drift off, etc. In the not too distant future your gps will not only determine the best route, but drive you there.

Very seldom is one more law a solution to anything and they often create more problems than they solve. Use your common sense and basic courtesy when you drive, eat in a restaurant, go to a movie theater or drive your golf cart. Hope others will do the same.