I WAS TRAVELING HOME ON FWY WHERE I WAS INVOLVED IN A CHAIN REACTION AUTO ACCIDENT . I WAS THE NUMBER 3 OUT OF A TOTAL OF 6 INVOLVED. I STRUCK THE CAR IN FRONT AT APPOX 5 MILES AN HOUR. WAS THEN REAR ENDED BY A SUV GOING APPROX 30 MILES AN HOUR. WHEN REARENDED, MY DRIVERS SEAT COLLAPSED. THE SEAT SHOULD NOT HAVE FAILED WITH SUCH MINIMAL IMPACT..