J. Y. Wong, PhD, DSc, is Professor Emeritus and Distinguished Research Professor in the Department of Mechanical and Aerospace Engineering, Carleton University, Ottawa, Canada. Internationally recognized in the field of road and off-road vehicle dynamics, he is also the author of Terramechanics and Off-Road Vehicles and is a member of the editorial boards of a number of international journals. He has received numerous awards from learned societies for his research accomplishments.