WHILE DRIVING REAR PASSENGER 'S SIDE AIR BAG WENT OFF INADVERTENTLY PASSENGER SUSTAINED BURNS ON BOTH HANDS. CONSUMER TOOK THE VEHICLE TO THE DEALER FOR INSPECTION, AND MECHANIC DETERMINED THAT A ROCK FROM THE HIGHWAY CAUSED THE AIR BAG PREMATURELY TO DEPLOY. CONSUMER INFORMED THE MECHANIC THAT THIS ANSWER WAS UNACCEPTABLE AND OTHER ACTION WOULD BE TAKEN. *AK