VEHICLE PLACED IN PARK AND IGNITION TURNED OFF. ENGINE WOULD NOT RESTART. TOWED TO MECHANIC. MECHANIC RESTARTED AFTER SENSING LOOSE IGNITION CONNECTION AND NOTED NO OTHER PROBLEMS. RETURNED VEHICLE TO OWNER, PARKED IN GARAGE IN PARK AND IGNITION TURNED OFF. ENGINE WOULD NOT RESTART. MECHANIC CAME TO HOME AND RESTARTED AS BEFORE. DRIVING TO REPAIR SHOP, STOPPED AND PLACED IN PARK, BUT LEFT RUNNING AND EXITED VEHICLE. APPARENTLY TRANSMISSION NOT ACTUALLY IN PARK BUT IN REVERSE AND TRAVELED A DISTANCE BEFORE HITTING A TREE CAUSING AN ESTIMATED $9,000 DAMAGE TO VEHICLE. APPARENTLY SHIFTER IN PARK BUT TRANSMISSION IN REVERSE AND LOOSE CONNECTION IN TRANSMISSION/IGNITION COMMUNICATION. SHORTLY AFTER PURCHASE AND DELIVERY OF VEHICLE IN 2010, EXPERIENCED SIGNIFICANT RECURRENT PROBLEM BELIEVED TO BE TRANSMISSION RELATED THOUGHT TO BE FIXED.