Obligatory story: I bought a Camaro when the new ones first came out (2009). I ran into some issues with the radio, found out via forums I was 3 firmware versions behind and then slowly found out car dealers were ill-prepared to be software vendors. They had no idea about the radio updates and their system showed nothing for me against my VIN. This was a common enough experience across the country that one of the coders working on the radio started giving the updates out via email. Which is how I wound up sitting in my car with two USB sticks full of C#. Put the first one in, turn the key, updates. Then open the driver's side door to reset the process (yes, seriously) and put the second USB stick in.

Before that experience I used to laugh off the idea of a weaponized mp3 file or people taking control of cars remotely. Now I think about that auto-boot USB port and the fact my driver's side door is a toggle to God-knows-what.