Once your teenager drives away, there is nothing you can do to prevent that teen from doing something stupid with their car; you can, however, train the teen to be a safer driver by: 1. Provide practice driving under a wide range of conditions.  Don’t just practice driving on sunny afternoons.  Go out at night, when it’s raining–in a variety of conditions.  Otherwise, the first time your new driver encounters these conditions, it will be when you aren’t with them. 2. Emphasize, again and again the use of a seat belt for everyone riding in and/or driving the car. 3. Restrict passengers; go beyond state law’s restrictions. 4. Substance abuse and driving: Don’t tolerate under any circumstances. 5. Restrict use of in car electronics such as radio/CD player, navigation devices, etc.