So, who here is interesting in root (linux) on the car? I haven't plugged in anything interesting into the USB ports to see how they respond, but that's probably our easier attack vector. My plan is to get a USB to Ethernet convertor, and see if the car asks for a DHCP lease. Assuming it does, we can start to MITM the car, and such.
Has anyone plugged a USB keyboard into the car to see what happens?
Has anyone figured out the access code required to get into diagnostic mode?
Alternatively, I'm assuming that the Model S's computer is probably some sort of ARM, or x86 embedded device. If we turn it off, and put a bootable USB stick in, and turn it back on, we should get it to boot from USB, assuming that it's in the boot order.
Anyways, that seems like it might be a fun weekend project, once I get my at-home charger installed.