The woman who crashed into them knew him and was out drinking and bowling with his group just beforehand. Likely they were racing, or less likely she was drunk and stupid and trying to scare her friends in a very dangerous way.
Either way, it’s a good reminder that hanging out with the wrong crowd and getting in the car with a drunk driver invites the bad kind of risk into your life. Even if you haven’t done anything wrong yourself. Tragic way to go.