"A critical component for autonomy is digital mapping at several layers of definition better than at present available in your satellite navigation system. One key specialist company is HERE, jointly owned by Audi, BMW and Daimler, and is busy mapping cities to a fresh level of detail. HERE chief executive Edzard Overbeek envisages a world entirely captured digitally, with data fed to the car in real time so that the self-driving system can respond to conditions ahead, including weather. “We have one of the largest databases in the world,” Overbeek says. “We’re moving this from metres to centimetres precision.” The pressure is on to deliver."