I have a Kia that's networked (since disabled). I did a GDPR data request and after a couple of weeks they sent me numerous CSV files and I was a little amused at some of the data fields.

Here's some examples I thought aren't for my benefit.

- How long I let the car warmup before driving after every start, - max speed, - acceleration rates, - Lateral acceleration around corners tagged with GPS data, - every GPS datapoint, - destinations and exactly when I set off and arrived