ApJ, submitted

The main objectives of my sabbatical leave were the following:> to identify and collect ap-propriate and up-to-date material for a book on Vehicle System Dynamics which I have been solicited to write,> to visit finest European academic research centers,> and to prepare a general outline and detailed contents of the book. In order to accomplish the objectives of my sabbatical leave I have been engaged in the following activities: • A good deal of my sabbatical leave I spend in Europe visiting three European leading academic centers and working on a book on Vehicle System Dynamics. In early June of 2008, I visited Technical University of Berlin (TUB) which is one of Germany's premier teaching and research centers. In 1980 I was a Research Associate at TUB and this afforded me excellent access to its facilities. Further, I spent some time with experts on vehicle system dynamics at TUB. Scholarly discourse with those people provided tremendous impetus to my publication effort on vehicle system dynamics. • In mid-June of 2008, I visited one of the finest European technical universities