Research in the Automotive Research Center addresses a broad set of issues pertaining to modeling and simulation of ground vehicle systems. The center is organized in five Thrust Areas with synergistic activities. The scope of the areas evolves over time based on our discoveries and feedback from sponsors and industry. Given the complex nature of research challenges in the automotive area, collaboration within and across the Thrust Areas is an essential element of our philosophy. Main accomplishments are highlighted every year through integrative case studies at the ARC Annual Program Review.