RAC launches device that will warn motorists of faults in cars before vehicles break down | Mail Online "The RAC is to launch a device that will warn motorists about faults in their cars before they break down. The matchbox-sized device, called the RAC Advance, transmits data about the car before and after every journey by slotting slots into a car's computer system. The automated system means that drivers then receive a phone call, text or email telling them there's a fault with their car." Now you would think you'd know if there was something wrong with your car, and not need someone to ring you up to tell you? The mercedes version will have someone from a bodyshop ring you up to tell you about the rust... Handy or just another way for the government to keep tabs on us?