Over a decade ago I watched a repo specialist that had license plate reading cameras on his tow truck, and he explained that it was uploaded to a commercial database where he could search for vehicle locations as reported by him and others. He used it to find where someone worked at a mall to grab their vehicle for the lien holder. Today the technology has gone much further, but the interesting part is that they keep all the data which betrays their contempt for privacy rights of law abiding citizens.