Man, I hate even talking on the phone while I'm driving. I drive a stick, so that makes it worse, but mostly it's the concentration thing. I just want to drive and listen to music. I can talk to someone else in the car, but it seems like it takes more concentration to talk on the phone (think I've actually read that somewhere, too). When I drive with a bunch of people in the vehicle, I don't even like being in charge of the iPod. I'll give it to someone else and let them play DJ.