My biggest fear of this technology is that people may be investigated for no reason other than that their car was seen in close proximity to where a crime was committed. Police and district attorneys have been found to fit the evidence to match an individual. This has lead to, at a minimum an extended "interview" at the police station, and at a maximum being put to death. Was your car parked at the entrance to an alley while you picked up a pizza at the same time somebody was raped in the alley? How much money do you have for an attorney?