This study presents data on the volume of materials used in car interiors and for convertible tops, and describes opinions and attitudes of key automobile executives about materials purchased for use in passenger car interiors for the 1961 model year. Also, this report compares selected findings regarding 1961 cars with those of an earlier study of 1955 cars. The main objectives of the 1961 study were: 1. To discover what characteristics manufacturers want and the fabrics used for upholstery, headlining, floor covering, sheeting, seat padding, sidewalls, and convertible tops. 2. To discover what changes are taking place in the use of materials and the reasons for those changes. 3. To discover who makes decisions about materials and what are the bases for decisions. All companies agreed to cooperate in providing consumption data and time for personal interviews with key executives. Information was obtained from five companies: American Motors, Chrysler, Ford, General Motors, and Studebaker-Packard.