New concept of cooperation.- Needs of improved assistant systems.- Adaptive cooperation between driver and assistant system.- Executive level as vehicle platform.- Requirements for the executive level.- Road-tire ? friction coefficient estimation.- Actuators and drive train architecture.- Vehicle dynamics model.- Performing the vehicle command.- Virtual driver for the cooperation.- Extended middleware for fault-tolerant architecture.- Agents derived from the robotic field.- Tactic agent for speedway/highway.- Adaptive cooperation.- Methodology of a fault-tolerant adaptive cooperation.- Understanding the driver maneuver.- Determination of the driver drowsiness.- Cooperation at the command level.- Feedback management for the driver and the virtual driver.- Discussion on the proposed concept.- Concept summary and overview of the functionalities.- General conclusion.