Road rage 2Road ragers beware. Get too angry behind the wheel and you’ll have to answer to … your own car? That’s right, our vehicles may soon be able to detect our emotional states while driving, automatically limiting speeds or issuing warnings to calm down when we become too aggressive, according to Gizmodo. The in-car emotion detector, invented by a joint research team from the Swiss technical school École Polytechnique Fédérale de Lausanne and the French automaker PSA Peugeot Citroen, monitors stress levels by using an infrared camera to measure feelings of anger and disgust. Still under development, the emotion detector will require further research before it can be tested for commercial use.