Just remember, there is a reason automotive braking systems are not fly by wire.
Can you imagine approaching a stop sign and due to a glitch, the control computer reboots/resets for 5 seconds?
Didn't Toyota briefly have all functions on fly-by-wire? About 10 years ago, I remember hearing of several instances of families having their car suddenly decide it would be neat to go top speed, and not allow braking, shifting to neutral, or even turning off the engine.