18. The apparatus of claim 17 wherein the adaptive interactive voice system is further programmed to provide a voice output based on the driver's situation and context by varying a tone of the voice output based on the information included within the at least one of the driver state model, the vehicle state model, and the vehicle environment state model.
18. The apparatus of claim 17 wherein the adaptive interactive voice system is further programmed to provide a voice output based on the driver's situation and context by varying a tone of the voice output based on the information included within the at least one of the driver state model, the vehicle state model, and the vehicle environment state model. 19. The apparatus of claim 18 wherein the driver state model includes at least one of a physiological state of the driver, a cognitive load of the driver, a stress level of the driver, an alertness state of the driver, and an emotional state of the driver.