Dieter Zetsche, chairman/head of Mercedes-Benz cars, speaks in a keynote address during the 2015 International Consumer Electronics Show (CES) in Las Vegas, Nevada Jan 5, 2015. Germany's Daimler AG wants to reset consumers' expectations about self-driving cars with its futuristic Mercedes-Benz F 015 concept, unveiled Monday evening at the annual Consumer Electronics Show in Las Vegas. [Photo/Agencies]