A car that can drive itself has successfully completed its first public test drive on the streets of Berlin.The VW has been specially adapted by experts at Berlin's Free University.A computer controls the steering, brakes and acceleration while scanners, radar and cameras monitor other traffic.Meanwhile, a precision GPS system means that the car always knows where it is to within a one metre margin of error.However, it is still not considered foolproof and needs a driver behind the wheel, just in case it decides to crash itself.Berlin Free University's Paul Rojas said: "The car is intelligent in that it can recognise its surroundings. It can react to events."Of course, it doesn't compare to an real life form - it's an intelligent artefact."