Vauxhall Insignia: The car that can see

The Opel Eye isn't just for reading road signs -- it also has a Lane Departure feature that scolds drivers who drift into the wrong lane. The camera is able to detect painted lane markings on the road and if the Insignia veers left or right into another lane without the driver indicating, the car's internal speakers will emit a beep to warn you you of your impending death or sheer stupidity. Hopefully, it'll do that before the sound of crumpling metal or bones breaking.