Of course, those who don't
Of course, those who don't use their phones in the car are likely: 1) extremely conservative drivers; 2) old; 3) boring. :)
Fact is, cell phones are just a very tiny percentage of the overall "distracted driving" phenomenon. In fact, they contribute to fewer car wrecks per year than does tuning the radio, talking with someone actually in the car, and eating while driving. Not that laws have to make sense, since they rarely do.