The ever-increasing use of electronics and computers in our vehicles is apparent to everyone and many studies have clearly documented the dramatically increased electronic content in future vehicles. What's not so clear is how vehicle designers will take advantage of the increased possibilities represented by more electronics and computers to give the driver-vehicle system expanded capability and enhanced value to our customers. The essence of our work in Project Trilby is to create the concepts and bring together the technology for total, integrated control of our vehicles in order to provide our customers with a level of performance not otherwise achieveable. Total, integrated contro requires the coordination of all vehicle subsystems, while factoring the needs, performance and preferences of the driver into the design and control decisions. One possible scenario is an Adaptive Vehicle which would have: the capability for sensing or identifying its operational situation, an on-board knowledge or data base, the ability to analyze the situation relative to history and indicated driver preferences and performance capabilities, and then the ability to adapt the vehicle via control decisions to achieve the beat overall system performance. Worldwide, in the automotive industry and in other industries, there are similar efforts to capitalize on the continued maturing of computers and electronics, with the core question being the degree of intelligence and authority to be incorporated. The overall approach to design of such systems is dependent on: the use of analytical design techniques, including explicit representation of the driver, to understand configure the system; achieving coordinated control of the subsystems; and interfacing properly with the rapidly changing environment in which our vehicles must operate.