WHILE IN A DRIVE THROUGH I WAS CREEPING UP AND WHEN TRYING TO COME TO A STOP MY BRAKE PEDAL WOULD NOT DEPRESS ALL THE WAY AS NORMAL AND TOOK A LONGER THAN NORMAL TIME TO STOP EVEN WITH BOTH FEET PUSHING ON THE BRAKE PEDAL. I ENDED UP ROLLING INTO THE CAR IN FRONT OF ME. I TOOK THE CAR TO THE DEALERSHIP THE NEXT DAY AND WAS TOLD THAT MY VACUUM PUMP/BRAKE BOOSTER NEEDED TO BE REPLACED.