When parked on a slope, driver attempted to back SUV out of parking space. Before starting car, with key inserted, ignition on and foot on brake, driver attempted to remove gearshift from park. Car drifted backward rapidly and uncontrollably. The brakes completely failed even with foot on brake. The car was a hazard to anyone in its path and could not be stopped. The emergency brake was attempted but failed to stop the car. Power steering failed. Gearshift could not be put back into park. SUV crashed heavily into a sign protecting the gas pump, but auto suffered major damage: REAR WRAP AROUND BUMPER, ENTIRE POWER LIFT DOOR, AND FRAME, were included in the damage. Driver was the wife of a couple. Very importantly, the husband had experienced the exact same uncontrollable roll-back in the same vehicle at the same place a few weeks earlier, but somehow missed the gas pump and sign. At that time, the car was uncontrollable and caused panic for both drivers in separate incidents. THAT'S NOT ALL--of key importance was a conversation we--as a couple--had with the salesman and the dealership's lead mechanic when the auto was purchased in 2017. We pointed out that when backing out of a space on a slight downslope and changing gears, the car drifted backwards uncontrollably a number of feet--at least three to six feet. At that time in 2027, we told them we did not like this feature, and it could be a danger to children playing in the driveway. They said that the m