This episode's headline: Small Car Safety. The guests include ROBERT McDERMOTT, United Services Automobile Association; GARDNER FABIAN, Calspan Corporation; DON SCHWENTKER, Automobile Importers of America; In Detroit (Facilities: WTVS-TV): ROGER MAUGH, Ford Motor Company. Byline: In New York: ROBERT MacNEIL, Executive Editor; In Washington: JIM LEHRER, Associate Editor; LEWIS SILVERMAN, Producer; PEGGY ROBINSON, Reporter