Daewoo Motor Co. officials said at a media preview of the Greater Los Angeles Auto Show that the South Korean car maker sold 2,400 cars in its first four months in the United States and intends to begin television advertising next year in an effort to crack the market. "The word-of-mouth is a little slower than we'd expected," said Bill Tucker, vice president of U.S. marketing for the Compton-based importer. Tucker also said Daewoo has downsized its sales goal and expects to sell just 30,000 cars here next year. At one time, company officials believed they could top the 50,000 mark. Separately, a top sales official of Torrance-based American Honda Motor Co. said Honda sales in the U.S. will hit the 1-million mark for the first time this year.