DRIVING SOUTH ON HWY 42, MCDONOUGH, GA. SPEED LIMIT 55MPH. WIFE WAS TRAVELING BETWEEN 45-50MPH. CAR IN FRONT OF HER SLAMMED ON BRAKES TO TURN INTO A GAS STATION, WHICH HAPPENED TO HAVE THE COUNTIES CHEAPEST GAS. WIFE ATTEMPTED TO STOP, BUT NOT IN TIME, RESULTING IN THE FRONT OF HER 2003 FORD EXPEDITION CRASHING INTO THE REAR OF THE STOPPED DRIVER. ON A FAIRLY SEVERE TRAFFIC CRASH, THE AIRBAGS FOR OUR 2003 FORD EXPEDITION DID NOT DEPLOY. ALL DAMAGE TO THE EXPEDITION WAS FRONTAL. ALL DAMAGES TO THE STOPPED VEHICLE WERE TO THE REAR. *TR