Imagine the scene: three young women are traveling in a car. It is a sunny morning, traffic is light, and all are wearing their seat belts and are not intoxicated. They are talking about a friend — "You like him, don't you?" It is happy, benign teenager chatter. Then the driver decides to include that other friend in the conversation. While steering, she sends him a short text message on her cell phone. Suddenly, the car swerves into oncoming traffic and metal hits metal at high speed. Bodies are thrown. Glass breaks. Blood splatters. When the car finally comes to...