WHILE PARKED, TRANSMISSION SLIPPED OUT OF PARK, ROLLED DOWN A HILL & HIT A TREE. VOLVO ADMITS SHIFT INTERLOCK DAMAGED, BUT DOES NOT CONSIDER THE PART DEFECTIVE. MOVIE TAKEN THAT SHOWS GEAR SHIFTER MOVES WITHOUT THE KEY IN THE IGNITION, BRAKE PEDAL DEPRESSED, OR GEAR SHIFT BUTTON DEPRESSED. TWO OTHER VOLVO OWNERS HAVE HAD THE SAME EXACT EXPERIENCE WITH THEIR CAR. LIKELY TO BE MANY MORE.