I BOUGHT A NEW NISSAN FRONTIER IN NOVEMBER 2004, I WAS REAR ENDED ON 1-19-2005. I HAVE HAD 32 NEEDLES STUCK IN ME SINCE THAT TIME INCLUDING AND IDET FOR AN INTERNALLY DISRUPTED DISC. I FEEL THAT THIS ALL COULD HAVE BEEN PREVENTED IF THE LUMBAR SUPPORT WAS EITHER NOT IN THE VEHICLE, OR THAT IT WAS NOT FAULTY. I HAVE BEEN TOLD THAT THEY SHOULD DEFLATE ON IMPACT (IN GENERAL), HOWEVER MINE IS HARD AS A ROCK. *NM