[20after4]

Perhaps there is an up-side to Hyundai's general lack of attention to basic security practices: Apparently it's just as easy to hack the onboard infotainment system. Someone recently published a procedure that allows owners to install a customized Linux ROM using the normal firmware update procedure. Hyundai literally used a default and well known signing key to authenticate their software updates so it's almost trivially easy to circumvent. The details were discussed previously on hacker news, I don't have the link handy but I believe it is possible to (easily) take control of the infotainment screen as well as CANBUS-accessible systems, including the door locks and very likely access all of the telemetry data destined for the dashboard instrument displays. There are probably even more possibilities that I haven't mentioned. I really wish I had more free time to hack on it because I think it would be really fun and interesting.