Even if you removed any IDs from the data and sufficiently fuzzed the location, speed, and timestamps, you are still left with a heatmap of where cars with OnSt

Even if you removed any IDs from the data and sufficiently fuzzed the location, speed, and timestamps, you are still left with a heatmap of where cars with OnStar drive most frequently. In a city, that is probably anonymous. If you are in a rural area or drive along a route where your car makes up the majority of the data points, it still isn't.