AFTER PURCHASING TRAILER FENDERS W/ BACKS FOR A BOAT TRAILER WAS TRAVELING DOWN I23 IN MICH. WHEN THE TOP BECAME DETACHED FROM THE BACK AND FLEW INTO THE PASSING LANE INTO THE FRONT END OF AN ONCOMING CAR, THERE WERE NO INJURIES BUT THE CAR DID SUSTAIN DAMAGES TO THE FRONT END. THIS WAS THE FIRST TRIP ON THE NEW FENDERS. *KB