WaPo hacks a Chevy Volt to see what data it's collecting.
https://www.dailywire.com/news/washington-post-hacks-into-chevy-to-show-how-much-cars-are-spying-on-owners?itm_source=parsely-api?utm_source=cnemail&utm_medium=email&utm_content=122619-news&utm_campaign=position6
The Post used a 2017 Chevy Volt for its experiment and learned that the car collected a wide range of highly precise data ranging from the vehicles location to information about the driver’s cell phone, including call records — noting that many vehicles copy over personal data the moment that a smart phone is plugged into the vehicle.
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For a broader view, Mason also extracted the data from a Chevrolet infotainment computer that I bought used on eBay for $375. It contained enough data to reconstruct the Upstate New York travels and relationships of a total stranger. We know he or she frequently called someone listed as “Sweetie,” whose photo we also have. We could see the exact Gulf station where they bought gas, the restaurant where they ate (called Taste China) and the unique identifiers for their Samsung Galaxy Note phones.