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.