This is truly sad. It reminds me of a crash the daughter of friend of mine was killed in several decades ago. It was on an icy road and her car went off a rural road into a ravine and became submerged. This sounds eerily similar. In both cases it involved a young driver on an icy road. Please teach your children to be very careful when there is any possibility of ice on a roadway. When in doubt just stay home until the roadways are cleared.