I JUST DROVE MY VEHICLE AND THEN PARKED IT AT MY HOME ON A DRIVEWAY THAT HAS A SLIGHT INCLINE. I PARKED VEHICLE IN 1ST GEAR (6 SPEED MANUAL TRANSMISSION), AND APPLIED THE PARKING BRAKE. APPROXIMATELY 10 MINUTES LATER I WAS IN MY YARD AND HEARD A MUFFLED POP NOISE AND THEN A CLICKING SOUND THAT RESEMBLED A ROLLER COASTER RIDE WHEN THE CARS ARE BEING PULLED UP A STEEP HILL. I TURNED AROUND AND SAW MY VEHICLE GOING DOWN THE DRIVEWAY. IT COLLIDED WITH MY WIFE'S VEHICLE THEN HIT A TREE. THE VEHICLE HAS 2800 MILES ON IT. WHEN I GOT IN VEHICLE THE SHIFT WAS IN 1ST GEAR, AND BRAKE APPLIED. I STARTED THE VEHICLE AND LET OFF THE CLUTCH AND THE VEHICLE MOVED FORWARD, INDICATING THAT IT WAS IN FACT IN FIRST GEAR STILL. I DUPLICATED WHERE I PARKED IT AGAIN AND IT MOVED BACKWARDS AGAIN. AFTER MULTIPLE REENACTMENTS THE VEHICLE WOULD MOVE UNTIL 3-5 MIN LATER IT WOULD MAKE A SUDDEN MOVEMENT IN REVERSE FOR ABOUT 6-12 INCHES. *TR