So you think junior is a little too lead-footed when he drives the family car? Starting next year, Ford Motor Co. will give you the power to do something about it.

The company will roll out a new feature on many 2010 models that can limit teen drivers to 80 mph, using a computer chip in the key.

Parents also have the option of programming the teen’s key to limit the audio system’s volume, and to sound continuous alerts if the driver doesn’t wear a seat belt.