Thinking that through, we can expect post-collision
inspections (by insurance companies or police) to
include a dump of the state of the current code(s) in
a vehicle as well as any available data from
just before a collision - speed profile, braking,
signaling, etc. - which might be used in court to argue liability claims.
I would not be surprised. Insurance investigators already have access to black box performance metrics leading up to accidents (last X seconds of RPM level, brake pedal force, accelerator position, accelerometer readings, seatbelt indicators). Getting software versions, checksums, etc would be trivial.