An antenna assembly comprising a radiating element which passively receives a signal fed by a vertically-stacked pair of asymmetrically-shaped, conductive cone elements mounted below the radiating element. The mechanism comprises a resonance chamber that defines a cavity. In a further embodiment, the gate electrode is selectively notched to a pre-determined width. A preferred menu section uses upper and lower middle web portions attached to web ends. The Guidance Assist Vehicle Module combines the processed information with information from the vehicle and the driver including the information on appropriate lane changes and speed commands to the vehicle.