MOS transistors each having different ON withstanding voltages that are drain withstanding voltages when gates thereof are turned on are formed on the same substrate. Profile information relating to a user is stored by a communications manager. During execution, the interactive speech application stores, in a log, event information that describes each task carried out by the interactive speech application in response to interaction with the one or more callers. It is then determined to activate the built-in flash unit based on the analysis. The sound duct carries the sound to an outlet at a location in the vehicle at which radiated sound efficiently drives selected audio modes of the vehicle.