Ford's feature, which debuted as standard equipment on the 2010 Ford Focus and is now standard on nearly all Ford and Lincoln models, allows owners to program a key that can limit the vehicle's top speed and audio volume. MyKey also encourages safety-belt use, provides earlier low-fuel warnings and can be programmed to sound chimes at 45, 55, and 65 mph.

Jim Motavalli, writing for BNET, points to several parents can use to monitor teen driving, such as the $249 Mobile Teen GPS unit, which will monitor how fast your kids are driving, find where they are in real time, and record if they're visiting "unapproved locations."

iGuardian Teen costs $19.95, and it does things like prevent texting and making calls while driving. It will also record video through a dash camera in five-minute loops, and automatically upload them in case of an accident.

Safe Driver is a free iPhone app that emits beeps to warn speeding drivers. PhoneGuard DriveSafe is a free app that disables phone texting, e-mail, and keyboard functions at speeds above 10 mph.

Would you monitor your teen's location and driving behavior? Would you let your insurance company see how you or your family members are driving?