Motorists under the influence of drugs are a growing threat on U.S. roads. If you think about driving on a Friday or Saturday evening about 16% of the vehicles - one in six of the cars - the driver will be under the influence of an illicit or licit drug.
"Drugged driving" hampers judgment, reaction time, driving skills and memory.
"Ozzy Osbourne, the former front man of rock group Black Sabbath, says that after decades of living a life of drugs and sex, he's lucky to be alive today.
Osbourne described how he often played a dangerous game when it came to using drugs and having promiscuous sex. "With the drugs, it nearly killed me on a daily basis -- I did a lot of heavy drug taking for a long time and I survived it by the grace of God.
Answering a viewer's question on whether he realized his power to change people's lives, Osbourne replied with shock. "When you're on the inside looking, you don't see it that way," Osbourne said. "But I suppose you're right. I do -- I do have the power to change people's lives."