Car telemetry, until recently, is still kind of basic and from a surveillance standpoint not that interesting. It's usually just speed, angles, performance, and electricity. It can tell you when the car was started and how long it ran, but not where it went.

On the other hand, the MIB or stereo, has a lot more interesting stuff: contact lists, GPS data, media, bluetooth devices, and even Wifi. The clock is GPS synced and it logs every time you touch the console: change radio, enter POI, phone calls.

And you can stick one of the new Carplay headunits into any old pre-OBDII car and now enjoy the same level of surveillance. Sony, Kenwood, JVC are all running QNX or Linux . And all of them just has a plethora of information behind some very basic security.