I WAS PARKED ON AN INCLINE RAMP IN A PARKING LOT AND TRIED TO MANEUVER OUT BETWEEN THE VEHICLE IN FRONT AND BEHIND ME. I PUT THE VEHICLE IN DRIVE AND REVERSE A FEW TIMES TO GET OUT. I MANEUVERED ENOUGH TO GET OUT OF THE SPACE BUT WHEN I PUT THE VEHICLE IN DRIVE (D), IT REVVED AS I STEPPED ON THE GAS (LIKE IT WAS IN NEUTRAL) BUT THE VEHICLE KICKED BACK INTO REVERSE WHICH IS WHAT MY PREVIOUS GEAR WAS. MY VEHICLE THEN ROLLED BACK. WHEN I LOOKED AT THE GEAR SELECT IT WAS ON DRIVE (D). THIS CAUSED ME TO HIT THE PARKED VEHICLE BEHIND ME CAUSING MINOR DAMAGE TO MY VEHICLE BUT MAJOR DAMAGE TO THE OTHER VEHICLE. THE TRANSMISSION LAGS BUT I WAS CERTAIN THAT IT WAS IN DRIVE BEFORE I STEPPED ON THE GAS. THE CAUSE IS PROBABLY DUE TO THE DRIVETRAIN NOT ENGAGING CAUSING A LOSS OF DRIVE. I BELIEVE ITS RELATED TO FORD RECALL 20S65 WHICH I DID NOT KNOW OF AT THE TIME OF THE CRASH.