Does a larger screen and more features necessarily mean better usability? User experience research indicates that purely visual and touch-based operation has its limits in driving situations. Therefore, "multimodal interaction" has become a key breakthrough in HMI development. It cleverly integrates voice commands, gesture control, eye tracking, and haptic feedback, allowing drivers to issue commands in the most natural and intuitive way. For example, you can look at an air vent and say "make it cooler here," and the system will understand. This decentralized hybrid operating mode aims to reduce the cognitive load on drivers, seamlessly integrating technology into driving behavior.