[Esel Mann]

I believe there exists transmissions for which they are shift by wire and available on production vehicles. However it is still moot. Throttle fails, transmission fails, ignition on/off fails, there is still

(a) parking brakes, which are independent of main brakes
(b) main brakes
(c) steering

I will grant you that perhaps (b) may not be valid for the case because of the prevalence of ABS which is computer controlled, but ABS is by a computer which I believe is independent of the computer for the transmission and independent of the computer managing throttle position.

The possibility of either (a), (b), or (c) temporarily failing such that there is no evidence of failure after the fact, well, what are the odds, if any?