this is the new rental agreementokay , what i did next was put the new registration number into the main computer automated vehicle visual recognition system , we call it cars for shortanyway , as you may know , every time a vehicle passes a cars camera on the freeway or on a street , the camera photographs the number plate , digitises it and then compares the registration with the cars databaseif there a match it sends us a message telling us where the vehicle was sighted '' laura was beginning to be impressed .