"60 Minutes" test-rides Mercedes-Benz self-driving car
As Google’s driverless cars have logged more then a million miles in the past six years, the rest of the auto industry is racing to keep up. Computer scientist Ralf Herrtwich hits the road with "60 Minutes" correspondent Bill Whitaker to demonstrate Mercedes-Benz's most advanced self-driving prototype. Watch the full story Sunday on "60 Minutes."