Autonomous car takes on UK's winding country lanes

Driverless cars have been let loose on some of Britain's narrow country lanes, testing their systems on roads that often have no lane markings and a speed limit of up to 60 mph. The autonomous driving project, called evolvAD, aims to turbocharge the UK's roll-out of self-driving cars by demonstrating they can cope with a road network - parts of which date back to Roman times. Kristy Kilburn reports.