> the "emergency brake" had to be a physically separate mechanical system to deal with the
>possibility of hydraulic failure
Oh - you've had a Citroen XM too then? (Brakes, power steering and suspension all shared the same hydraulics. Not a good idea when the quality of the pipes and linkages was so abysmal..)
In the 12 months I had it I had total hydraulic loss 3 times. At least it had a food operated parking brake that used a cable!