AS THE DRIVER WAS MAKING A LEFT TURN INTO THE CLOSEST LEFT TURNING LANE AND ACCELERATED AT APPROXIMATELY 15MPH, THE VEHICLE FISHTAILED AND SWERVED AS THE DRIVER ATTEMPTED TO BRAKE. THERE WERE SEVERAL ATTEMPTS TO CORRECT THE TURN HOWEVER THE VEHICLE WAS UNRESPONSIVE AND CONTINUED TO SWERVE. THE DRIVER HAD NO CONTROL OF THE REAR END OF THE VEHICLE, ALMOST AS IF SOMETHING HAD COME UNDONE. THERE WAS A COLLISION WITH A TREE AND A STREET SIGN DUE TO GREAT AMOUNTS OF SWERVING THAT RESULTED IN THE CAR RUNNING OFF THE SIDE OF THE ROAD.