"Scientists have unveiled the latest prototype of a car that "drives itself" with the help of a tablet computer.
Acting like a plane on auto-pilot, it is designed to take over from humans in slow-moving heavy traffic or on a familiar route, such as a school run.
It is activated using an iPad on the dashboard - by tapping on a prompt, the driver can make the car's onboard computer take the wheel.
Robotcar, which is being developed by Oxford University and Nissan at Begbroke Science Park in Oxfordshire, uses a combination of external sensors and computer power to calculate the correct direction and speed."
http://uk.news.yahoo.com/robotcar-latest-driver-less-vehicle-unveiled-211012704.html