Hmmm...most cars today have those nifty automatic transmissions. Having spent twenty years driving cars and trucks with manual transmissions, I'm well practised in steering with one hand. In general, if my right hand wasn't on the stick, it was on my girl friend's knee. Now, I'm not gifted with exceptional coordination, so what this means is that the "hands" issue isn't relevant to cell phone use while driving.
A woman in Los Angeles county swerved arcoss a county road, colliding with another car and killing herself and a person in the other car. Cell phones where not involved, but only one of her eyes had mascarra applied, and there was a mascara kit open in her car.
I saw a woman hit a parked car because she was reading some document while in motion.
I've seen men shaving, eating, reading the paper, turning their heads all the way around to track some nice female buttocks, blowing their noses, picking their noses, eating their buggers, combing their hair, polishing their bald spot, fondling their passengers, smooching, monkeying with their sound system,talking to passengers, yelling at kids, and smoking. (and talking on cell phones)
The issue isn't cell phones, it's distraction in general. The cell phone issue is popular because it's got emotional heritage from a few years back when cell phones were pricier and only the show off yuppy clowns in their expensive cars had them, and the politicians are now using that fossilized resentment as an excuse to increase revenue via tickets and providing the police with yet one more unnecessary reason to stop and possibly search a vehicle.