

Solved with ejector seats, obvs.
If you can’t physically handle explosive bolts firing within close proximity of your ears to shear the roof off your vehicle, and the subsequent 12-20G’s of acceleration as you’re unexpectedly launched skyward, then what are you even doing in a vehicle!?
As to how to trigger the explosives and rocket motors when the power has gone out? Independent emergency batteries that activate when a power loss is detected.
Could these batteries be used to power the braking system instead of a dangerous, cartoonishly violent, and ill-advised fantasy? Yes.
Will they be? No.

I choose to be weird.