WHILE DRIVING ON THE FREEWAY THE ACCELERATOR GOT STUCK CAUSING US TO HAVE AN ACCIDENT. AS THE TRUCK INCREASED IN SPEED MY HUSBAND STOMPED ON THE BREAK AND THE TRUCK WAS ONLY GAINING SPEED. WE PLACED THE TRUCK ON PARK AND THE TRUCK EVENTUALLY CAME TO A STOP CAUSING THE TRUCK AN IMMEDIATE STOP AND FORCED US DOWN A HILL. THE TRUCK WAS TOTALED BECAUSE WE WERE PULLING A 5TH WHEEL.