DAKOTA TRAVELING 50-55 MPH ON INTERSTATE 95 HIT FORD TRAVELING 20 MPH NEAR EXIT RAMP CAUSING FORD TO HIT CADILLAC TRAVELING 10MPH CAUSING CADILLAC TO HIT MURANO, RESULTING IN 4 CAR ACCIDENT. 2017 FORD TOOK BRUNT OF HITS DUE TO SPEED OF DAKOTA. 2017 FORD DEEMED TOTALED. AIRBAGS ON 2017 FORD DID NOT DEPLOY, THOUGH SENSORS APPEARED ACTIVATED--SEE PHOTOS THAT SHOW LIGHTS ON. ALL INTERVIEWED AT BODYSHOP, INSURANCE ADJUSTER ETC. DON'T UNDERSTAND WHY AIR BAG DIDN'T DEPLOY CONSIDERING THE SPEED OF HIT FROM BEHIND AND THE FORCE OF HITS ON BOTH SIDES, DAMAGE, AND SENSORS ACTIVATED.