I don't know if this would be considered off topic but I've often wondered why we are striking out at cell phone users while we still allow things to be installed or used like GPS, radio, video data/entertainment screen, CD player, DVD player, laptop (LEO's are notorious for using their laptops while driving), mirrors on sun visors, drive up windows at food service establishments that encourage eating while driving, ashtray, etc.
All of the above contribute to inattentive driving and statistically about 25% of all traffic accidents although I personally believe the reverse would be more accurate. If all drivers paid attention to their driving, accidents would be reduced considerably. But instead we do word puzzles, read maps, read newspapers, fix our hair, put on make-up, dig through boxes of CD's to make a selection then operate the stereo system, read GPS screens and watch DVD's, argue with the kids in the back seat, gawk at other happenings, etc. Sometimes multiples of these simultaneously.
Many of our newer vehicles don't have the traditional buttons for controlling climate or the sound system but have replaced them with video monitors that require the operator to read and navigate through a series of screens. These systems include built-in GPS technology, radio, CD player operations, climate control, data monitoring and reports, and even DVD players. If that isn't going to be a distraction by design I don't know what is.
I encountered a vehicle on the interstate in the Mnpls-St. Paul area one time I thought was a drunk driver. He was all over the road weaving across all driving lanes and the shoulder. If I had a cell phone I would have called 911 to report it. I finally managed to attempt passing and when I got along side I discovered he was holding a cell phone against his ear with one hand, had a pencil in the other, and was working on a word search puzzle laying across his steering wheel! You won't regulate this kind of careless stupidity.
I think I'm with Mike on the hands free. I have Ford Sync in my truck and I don't even have to carry CD's anymore. All my favorite music can be put on a flash drive or an MP3 player that is plugged into a USB port on my console. I can press one button on my steering wheel and use voice command to select artist, album, song, or genre and it will respond. I can press the same button and use voice command to call anyone in my cell phone's contact list. I personally don't feel any more inattentive talking on the phone than I would while talking to a person sitting next to me but that's just my opinion I guess.
I can say one thing. I am far more attentive than I would be digging in a box to select a CD, opening the case, removing the CD, ejecting the one from the player, digging for its case to put it away, inserting the new CD into the player and then operating the buttons on the console to play a desired song or configure the player options. I am far more attentive than I was trying to manage unruly kids in the back seat while driving. I am way more attentive than I am (admittedly) when I am trying to hold a sandwich or other food item without spilling on myself. I am far more attentive than I would be trying to light up a smoke.