The car uses cameras and sensors placed on its roof. It also includes a laser range to look around for traffic around it. although the car is automatic still it requires a skilled driver to be seated so that the car can be taken into control if it goes out of control under any circumstances. The routes are already planned and programmed into the car by real drivers as well as the police have also appraised the car by saying “We believe our technology has the potential to cut that number perhaps by as much as half”
In short words Google has designed the car of the future.