And wouldn't encypting this require the user to enter a password on each trip where they want to make use of the info? Ultimately it doesn't strike me as unrea

And wouldn't encypting this require the user to enter a password on each trip where they want to make use of the info? Ultimately it doesn't strike me as unreasonable for the user to need to wipe their info from their car when they sell/scrap it, just as they need to remove their physical belongings from the interior. (Although I'm sure things could be designed better to make the wipe process easier to accomplish and harder to forget.)