If you're a parent of a teenage driver who's about to take an online driver's ed course, there are probably a million things running through your head.

Do you know what the leading cause of death among teenagers is? According to the National Highway Traffic Safety Administration, it's motor vehicle accidents.

On Friday, February 20th, an SUV packed with one American and a group of foreign students who were studying in the United States swerved off the highway, crashed into a tree and burst into flames. Six of the seven people in the vehicle were killed.