A CAR DARTED INTO MY LANE AT 90 DEGREES. MY RENTAL CAR RIGHT CORNER ENDED UP AGAINST THE OTHER CAR'S LEFT FENDER. THE DRIVER AIRBAG DID NOT DEPLOY BUT DID START TO INFLATE. A LOT OF DARK GRAY SMOKE ISSUED FROM THE STEERING COLUMN FOR A LONG TIME AFTER THE BAG STARTED TO DEPLOY. THE BAG COVER APPEARED TO EXTEND ABOUT 6" FROM THE STEERING WHEEL AND THE SIDES LOOKED PLEATED, LIKE AN ACCORDION BELLOWS. ALSO SOMETHING HAPPENED UNDER THE DASH AROUND THE PEDALS. I SAW A RECTANGULAR LIGHT COLORED AREA 4-9' TALL AND 10-20" WIDE AS IF A PANEL HAD BLOWN OFF A LOWER AIRBAG BUT NO INFLATION OCCURRED THERE AT ALL. JAN. 22, 2020 ON BON AIR RD, KENTFIELD. NOT SURE IF I WAS ABLE TO BRAKE. PASSENGER SIDE AIRBAG DID NOT DEPLOY EVEN THOUGH THERE WAS A PASSENGER IN THE FRONT SEAT. RENTAL COMPANY ASKED THAT THE CAR BE TOWED TO A BODY SHOP.