doom dragon 105
Smash Lord
same with the radio, and calibrating the speakers in your car. when doing that you have to concentrate and see what you have to do to make the speakers sound their best. when you have friends in the car that your talking to your in a conversation but more direct. a hot girl in a car next to you your probably trying to impress her so your attention is again directly divided.A cell phone requires you to respond and interact, drawing your focus and attention toward it. With other outside distractions (ie) radio, loud friends, hot chick in the car, you are not required to interact, thus less of your focus is pulled away from what you are doing.