You've taken them out for driving lessons, helped them pass the test and watched them tear up the L plates – but now do you allow them to actually drive the family car?
The dilemma facing every parent with a teenage driver could be eased with a new "youth key", which automatically cuts a car's performance and limits its speed.
The duplicate key also keeps the radio volume low when the windows are open and prevents the car from starting until everyone has their seatbelt on.
It can even set the car to "Cinderella mode", forcing a curfew-busting driver to limp home after midnight no faster than 40mph.
The technology, which is currently available only in the United States, is expected to reach the UK in the next two years.
It was showcased for the first time yesterday by the motor insurance research organisation Thatcham at an airfield in Oxfordshire.
The youth key is aimed at helping parents keep newly motoring offspring safe by enabling them to use the family car rather than having to resort to a smaller and older model with inferior safety features.
Click here to read the full story at The Scotsman website.