If you're a lousy driver, you'll be even worse on the cell phone. I have seen some pretty horrible driving behaviors from those on cell phones. But, my judgmental personality says that these morons will talk on the phone, legally or not.
Cops need to drive around in regular cars and pull people over for the stupid stuff. Sitting on the side of the road in marked cars writing speeding tickets doesn't do . If people thought they were actually going to get stopped for doing stupid things MAYBE they would do less of it. Just a stretch, but the current state of traffic enforcement is there for nothing other than revenue generation.