I WAS DRIVING STRAIGHT DOWN A ROAD AT SPEEDS BELOW 50 MPH AND SUDDENLY FELT A HUGE BLOW TO THE SIDE OF MY HEAD, ALONG WITH A LOUD BANG. I THOUGHT AT FIRST MAYBE A DEER HAD COME THROUGH MY WINDOW, BUT BOTH SIDE CURTAIN AIRBAGS HAD DEPLOYED. I DID NOT HIT ANYTHING AND NOTHING HAD HIT ME. I DID NOT RUN OVER ANYTHING EITHER. I HAD THE SHERIFF DOCUMENT THAT THERE WAS NO DAMAGE TO MY VEHICLE. THERE WERE ALSO CARS BEHIND ME THAT WITNESSED THIS EVENT. MY VEHICLE WAS LOOKED AT BY A REGIONAL ENGINEERING TEAM FROM HONDA. TODAY A CUSTOMER SERVICE REP CALL TO SAY THAT IT WASN'T THEIR (HONDA'S) PROBLEM AND THEY WOULD NOT BE OFFERING ANY COMPENSATION BECAUSE THERE WERE NO INTERNAL ERRORS SHOWING UP AND THERE ARE NO KNOWN ISSUES WITH THIS VEHICLES SRS. THEY COULD NOT TELL ME WHY THE AIRBAG HAD DEPLOYED, ONLY THAT THEIR TESTS SHOWED THERE WAS NO INTERNAL ERRORS. THE REP SAID THERE ARE A LOT OF REASONS AN AIRBAG CAN INADVERTENTLY DEPLOY BUT SINCE SHE WASN'T DRIVING WITH ME THAT DAY SHE COULDN'T TELL ME WHY MINE HAD, ONLY THAT NO INTERNAL ERRORS SHOWED UP. THE ESTIMATE TO REPLACE BOTH SIDE CURTAIN AIRBAGS IS OVER $8000.00.