General Motors is looking to new models and the new year in hopes of regaining its slipping share of the automobile market, Chairman Roger B. Smith said. GM's market share for the 10 months of the 1987 calendar year was 37.1%, compared to 41% for the 1986 calendar year. "We're not going to get to 40% by Monday," Smith said in response to questions at a meeting of the Detroit Economic Club. "But we don't have all our new cars out yet. . . . As our Oldsmobile Cutlasses come out, as the Pontiac Grand Prixs come out, as the Buick Reattas come out, we will move up in market share." He said he didn't know how soon that would happen, but said GM does better in a weak market. "We'll have to wait and see. If the market goes down . . . we'll get to 40% a lot faster because we do a lot better in a down market."