Air Bag Not Deploy problems of the 2004 Nissan 350Z

Two car accident on 5/29/10 at 5:12 p. M. On interstate I-40 westbound at sara road, candian county, oklahoma. During highly congested traffic, I rear-ended a 2007 Buick enclave with my 2004 Nissan 350 z at approximately 45 mph. The passenger airbag deployed, but the drivers airbag did not deploy.

I was told, by the dealer, that the airbags on my 2004 Nissan 350z will no longer work unless I replace the left and right modules and sensor at an approx cost of $1700. Nissan is no longer willing to warranty the aribags, since the car has 116,000 miles (per 2/5/10 call from consumer affairs division). Their wty is 60 mos or 60k miles; however, the seat belt wty is 120 mos. Or 120k miles. The airbags are a safety issue that are just as important in the event of a crash as seat belts. They have never been deployed. I suggested Nissan reconsider the air bag wty and assist me with getting this ($1700) issue resolved as I cannot afford to. They declined my offer. I do not feel safe driving the car if the air bags will not deploy in the event of a crash. I am trying to proactively avoid serious injury or a fatality in the event of a crash.