So sorry to hear about the loss of two young lives. I worry so much about my younger brothers driving late at night. Just last summer, a family friend lost her two sons at the same time when the oldest brother fell asleep at the wheel on a cross-country trip.
PLEASE, PLEASE, PLEASE everyone: Don't drive when you're tired. Pull over and rest a while. Getting to your destination a little late is better than never getting there at all!