Anonymously driving your own vehicle is becoming unattainable with the proliferation of automatic license plate readers (ALPRs) now coming into wide-spread use. Combined with always-on electronic toll tags, smart phone traffic apps and even plain cell phones are adding to this problem. There is little public disclosure of this tracking and little legislation limiting the length of time data is retained, even if it is not involved in any investigation. History, laws, funding, detection, and their technological limitations, will be explored in this talk.