General Motors (GM) first started tracking customers in 1996. Using its popular OnStar service, those in select GM vehicles could ask for directions, diagnose vehicle-related problems, or even disable a stolen vehicle by contacting a voice on the other end of the line. For around $35 a month, GM provided customers with an on-demand concierge available at the touch of a button. But unbeknownst to many, OnStar required more than just a monthly subscription fee. “Data is the currency of the digital age,” said Jim Barbaresso, Intelligent Transportation Systems lead at HTNB, told CNN last year. “Vehicle data could be…

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