Last time I needed to get in a car, I broke the window....

 

But that's the point. If you need to break a window, then you have physical access thus you plug in to the port locally, which, again, as stated pretty much makes this a non story. My point still stands re m1bjr.

 

Last time I needed to get into a car I used the key

 

The point I'm making is that nefarious characters could break in, plug in a Bluetooth unit (hidden) and then use it to cause mayhem unbeknown to the driver.

Tis all a bit hypothetical anyway.

 

Fair enough. But break a window and someone would
notice.

Having said that its all good James Bond fodder