> In an ICE car this is not the case, and if the engine is running away it can bleed off vacuum and you lose your brake assist
In an older car, yes. Current cars in the US are all fly-by-wire throttle, and programmed to close the throttle if you apply the brake. And when the throttle is closed, vacuum is restored, and you will have full brake power. All major automakers started doing this did this after the 2009 Toyota "sudden acceleration" debacle.
In an older car, yes. Current cars in the US are all fly-by-wire throttle, and programmed to close the throttle if you apply the brake. And when the throttle is closed, vacuum is restored, and you will have full brake power. All major automakers started doing this did this after the 2009 Toyota "sudden acceleration" debacle.