2005 LEXUS LS430 Seat Belts Problems

I HAVE OWNED CAR SINCE NEW. ALL SERVICE PERFORMED BY SAME DEALER ON TIME. ALL REPAIRS DONE AS SUGGESTED BY DEALER. AIR BAGS RECALL PERFORMED IN 2006. NEW BRAKES WITHIN 6 MONTHS. DRIVING TO MY WIFE"S WORK (AIRPORT) ON SAME ROUTE FOR 38 YEARS (37 MILES FROM RESIDENCE). I OBSERVED RED LIGHT AND CARS STOPPED 100 YARDS AHEAD 1/4 MILE FROM DESTINATION. I APPLIED BRAKES SEVERAL TIMES TO NO AVAIL. I TOLD MY PASSENGERS THAT I COULD NOT STOP AND APPLIED BRAKES SEVERAL TIMES AGAIN. BRAKES DID NOT GO TO FLOOR. IT FELT AS THOUGH CRUISE CONTROL WAS ON - IT WASN'T. I AVOIDED A FEW CARS BY STEERING TO CURB AND SIDEWALK. I OBSERVED A LIGHT POST ON SIDEWALK AND HAD TO TURN INTO TRAFFIC HITTING TWO CARS. A MOTOR POLICEMAN WAS DIRECTLY BEHIND ME AND SAID NO BRAKE LIGHTS CAME ON. NO AIR BAGS DEPLOYED AND LEFT SIDE...