Privacy tip: When you sell or trade-in a vehicle, remember to erase all of your data from the in-car electronics. The car dealerships will NOT do this, although they should be required to.
This wasn’t done for the last few vehicles I’ve purchased. I know one previous owners name, where she lives, what her taste in music is, where her dad lives (and how often she visited him), and what restaurants she often went to. In the wrong hands, this is dangerous as hell.