The key factor is the description of the vehicle, making this case highly solvable.
Progress in crime lab methods and PC innovation are helping the police to find vehicles associated with violations. Because of new forensic devices, even modest bits of a car, or a faint impression from a tire tread, can limit the rundown of suspect vehicles. The police would then be able to cross-reference that data with data in the region and examine a subset of autos. In the given case we have a load of information about the car used which can easily lead to the criminal.