Does the E-brake require a constant voltage to keep it disengaged, so that a power failure would engage it? or does a power failure leave it in the same state it was before the failure? or is voltage required to keep it closed? On steep hills, I always used to put the car in gear (manual) (or P for an automatic) AND use the E-brake with a mechanical ratchet. What are the fail safes with the electronic brake? In related news, I'm surprised at how loud it is when it engages. In other related news, I'm surprised at how impotent the E-brake is while driving. yeah, it slows the car, but it's not nearly the "holy $#!+ the brake is on" that I'd expect from pulling stiffly on a handbrake.