OWNER REPORTED THAT WHILE DRIVING ON THE HIGHWAY, THE ACCELERATOR PEDAL GOT STUCK. EXAMINATION REVEALED THAT SMALL BARREL ON END OF CRUISE CONTROL CABLE DISLODGED FROM SLOT IN THE PLASTIC CRUISE CONTROL CABLE PULLEY MOUNTED ON THROTTLE SHAFT. THE PLASTIC PULLEY BROKE AND ALLOWED THE CRUISE CONTROL CABLE END TO WEDGE BETWEEN THE PULLEY AND THE THROTTLE STOP BRACKET, JAMMING THE THROTTLE PLATE APPROXIMATELY 20-30% OPEN. EXACT CAUSE OF FAILURE MECHANISM NOT KNOWN AT THIS TIME. *TR