I WAS IN A PARKING GARAGE EASING DOWN A RAMP AT 5 MPH WHEN THE VEHICLE SUDDENLY ACCELERATED ON ITS OWN FORCING THE LEFT FRONT WHEEL OVER A SIXTEEN-INCH BARRICADE CAUSING THE DRIVER SIDE OF THE VEHICLE TO RISE SO FORCEFULLY THAT IT NEARLY FLIPPED UPSIDE DOWN. THE VEHICLE ROTATED 180 DEGREES AND LANDED ON THE PAVEMENT WITH SUCH FORCE THAT THE RACK AND PINION STEERING MECHANISM BROKE. MY EYEGLASSES FLEW OFF MY FACE AND LANDED SEVERAL FEET AWAY.