Someday soon your car may be able to tell if you've got road rage.

A team in Switzerland has teamed up with a French auto maker to develop an in-car emotion detector.

It'll use an infrared camera located behind the steering wheel to check your face for whatever kind of emotions you might be showing. Then using a computer program it would calculate a driver's stress level.

It could then slow the car or flash a warning to the driver to calm down. The system still has a few bugs to work out, mainly because people express anger or stress in different ways.

--Rob Archer