LEAVING A CHIEFS GAME IN KANSAS CITY I WAS WAITING IN TRAFFIC. WE SLOWLY MOVED FORWARD AND MY BRAKE PEDAL WENT TO THE FLOOR AND WOULD NOT STOP THE VEHICLE I RAN INTO THE TRUCK IN FRONT OF ME . THERE WAS NO DAMAGE TO HIS BUMPER BUT I GOT A DENT THE SIZE OF A BASEBALL. LATER ON THE WAY HOME I RELISED THAT IT WAS STILL DOING IN AT LOW RPMS SO I TOOK IT TO THE DEALERSHIP AMD THEY SAID MY VACUME PUMP WAS GOING OUT!! AT 45000 MILES???? THE MECHANIC SAID IT WAS A VERY COMMON PROBLEM.