WHILE PULLING UP TO THE CURB TO LET A PASSENGER OUT DRIVER'S FRONT FLOOR MAT PUSHED UP AGAINST THE GAS PEDAL AND CAUSED CAR TO ACCELERATE. THE DRIVER STEPPED ON THE BRAKE TO STOP THE CAR, BUT WITH THE FLOOR MAT PRESSED AGAINST THE GAS PEDAL, THE CAR CONTINUED TO ACCELERATE, HITTING THE VEHICLE PARKED IN FRONT OF IT. THE GAS PEDAL EXTENDS DOWN AND ATTACHED TO THE FLOOR SO THAT THE FLOOR MAT HAD NO PLACE TO GO, BUT AGAINST THE GAS PEDAL, IF IT GETS PUSHED FORWARD INADVERTANTLY AS IT DID IN THIS CASE. *AK