The solution to reducing driver distraction likely resides in combining a variety of driver interfaces to fit specific tasks. Speech plays a critical role for text entry while driving, but holistically, complex infotainment systems require simple, multimodal user interfaces. This presentation describes a multimodal HMI design model, along with supporting research, for driver actions such as task selection, list management, text entry, making requests, and map control, which are required to perform a growing assortment of in-vehicle, nondriving tasks.