FREEWAY TRAFFIC SUDDENLY CAME TO A STOP. I STOPPED BUT WAS REAR ENDED BY A VEHICLE TRAVELING AT APPROXIMATELY 25 MPH AND PUSHED INTO CAR IN FRONT OF ME. DRIVERS SEAT BACK COLLAPSED. I SUSTAINED MINOR BACK, HIP, BRUISED STOMACH MUSCLES AND KNEE INJURIES THAT I FEEL WOULD HAVE BEEN AVOIDED OR MUCH LESS SEVERE HAD THE SEAT BACK HELD. I'M HAVING A PROBLEM COMPREHENDING GMS CONTENTION THAT THE SEAT BACK YIELDING IS A DESIRABLE RESPONSE TO THIS OR ANY SITUATION (AND THE FACT THAT THEIR PRODUCT ADHERES TO ALL RELEVANT STANDARDS, ETC).*AK