As the Baby Boom generation gradually moves into its later years, that movement will become a Senior Boom that will have a dramatic effect upon the design of products entering the marketplace. To respond to this market, engineers and designers will require a good understanding and awareness of the changes that take place in vision and cognition as a result of the aging process, and how these changes affect the interaction of older adults with their vehicle systems such as controls and displays, mirrors, entry and exit, and lighting. This paper is an attempt to bring that understanding to the designer and engineer, as based upon current research.