THE CAR WAS STOPPED IN STOP AND GO TRAFFIC ON LAS VEGAS BOULEVARD WITH AUTO-PILOT ENGAGED (BOTH ACCELERATION/DE-ACCELERATION/BREAKING AND STEERING). WHEN THE CAR IN FRONT BEGAN TO MOVE, THE TESLA BEGAN TO ACCELERATE. I WAS NOT PAYING ATTENTION AND ANOTHER CAR TRIED TO MERGE INTO MY LANE. THE AUTO-PILOT FAILED TO RECOGNIZE THE OTHER CAR AND COLLIDED AT APPROXIMATELY 10MPH, CAUSING MINOR EXTERNAL DAMAGE TO BOTH VEHICLES. DAMAGE FOR TESLA CAME TO $600. VEHICLE WAS A RENTAL FROM TURO