I WAS DRIVING MY 2004 VOLVO C70 WHEN I DRIFTED OFF INTO A HIGH CURB. THIS CAUSED MY PASSENGER AIRBAG TO DEPLOY.THE LOUD AND DISRUPTING NOISE THEN CAUSED ME TO LOOSE ALL CONTROL OF THE CAR. AS I THEN RAN THROUGH A FENCE AND TREES BEFORE I CAME TO A STOP. I WAS THE ONLY ONE IN THE CAR. SO WHY DID THE EMPTY PASSENGER SEAT BAG DEPLOY. AND WHY DID THE DRIVERS AIRBAG NOT DEPLOY. *TR