WAS DRIVING 35MPH USED FRONT SIGNAL TO TURN ONE THEN SUDDENLY TURNED THE OTHER. WAS REARENDED BY ELANTRA. UPON IMPACT, THE DRIVER'S AIR BAG DID NOT DEPLOY. ENTIRE FRONT END HAD CRUMBLED & WAS PUSHED BACK. HAD VEHICLE TOWED TO BODY SHOP. INSURANCE INSPECTOR TOOK PICTURES. *AK