Removing parking brake street/strip car

The " Park" brake doesn't hold in reverse.
How many times you back outta a driveway or parking space, - put it in "Drive", - and go no-where while the emergency is applied.
GM addressed this in the early 80's by putting one emergency cable through the rear of the backing plate, to make that wheel hold in reverse while parked on a backward downslope .
It was not a serious attempt at a "PARK" brake till then !