Apparatuses, methods and systems are described that are configured to act on a heading-dependent suitability indicator of a channel through a mobile communication system that can have a defined heading, such as a passenger vehicle or other motor-propelled vehicle. The first automatic stopping condition requires a road gradient equal to or smaller than a first gradient threshold, and the second automatic stopping condition requires the road gradient equal to or smaller than a second gradient threshold. The invention further relates to the production of such blends and to their use as wetting agents and dispersants. To enhance cognitive function in individuals in whom there is either no brain pathology or in whom the existence of brain pathology is either unknown or undefined, including a human without known disease. The flexible substrate is mounted to the plastic mounting surface, and a plurality of air flow passageways are defined by adjacent ribs in the flexible substrate.