I WAS PULLING INTO A PARKING SPACE ON AN EMBANKMENT AT APPROXIMATELY 2 MPH, WHEN I APPLIED THE BRAKE TO STOP THE CAR, THE CAR INSTEAD OF STOPPING, ACCELERATED OVER A 2 FOOT WALL ONTO A TWO FOOR PATCH OF GRASS AND OVER THE EDGE OF A 3.5 TO 4 FOOT EMBANKMENT ONTO A SIDEWALK AND THEN A CITY STREET. AS I TURNED THE CAR TO THE RIGHT, AWAY FROM THE ROAD, WHILE CONTINUING TO KEEP MY FOOT ON THE BRAKE, IT CAME TO A STOP. I WAS LUCKY THAT I DIDN'T GET KILLED OR KILL SOMEONE