In January, researchers of the INT applied for a patent of a technology which allows the horns of parked cars to be activated in case of disaster. The technology is based on the eCall emergency system, which new cars are going to be equipped with as from September 2010. The eCall system was developed at the initiative of the EU Commission to help reduce the number of road traffic fatalities. It consists of a GPS sensor and a mobile phone component, which is activated only in case of an accident (i.e. when the airbags are triggered) and which can transmit data (e.g. accident time, coordinates and driving direction of the vehicle) to an emergency call center.

Hmmm ... can't think of any way for this to be misused ...