Abstract: Consumer driving-activity market research information may be obtained by selecting panelists to form a consumer driving-activity panel. At least one trackable motor vehicle and at least one consumer driver who has use of the vehicle are associated with each panelist of the panel. The trackable motor vehicles associated with the panel provide representatives from a varied plurality of vehicle-classification categories and the consumer drivers associated with the panel provide representatives from a varied plurality of demographic categories. For each panelist, panelist attribute data including vehicle-classification data and driver demographic data are stored in a data processing system. During trip portions of a sample group of trip portions, time-annotated vehicle-location data approximately tracking the movement of each trackable motor vehicle are generated automatically by means of automatic vehicle-location tracking gear on the vehicle.