Few analysts expect Warner Bros.' Speed Racer to win the box-office race this weekend. The film -- likely to attract mostly families with small kids -- is expected to gross around $30-35 million. That's about a third of what Iron Man earned a week ago, so if that film drops even 60 percent, it would remain at the top. Analysts suggest that such a plunge is unlikely, especially given last week's exit polls indicating that it may even do considerable repeat business. Today's (Friday) Los Angeles Times indicated that Warner's top execs are concerned that Speed Racer has been tracking so poorly that only "a narrow sliver of boys 7 to 11 years old" seem eager to see it. Warner's marketing chief Sue Kroll told the Times that she was "bewildered" about the tracking surveys, noting that preview audiences have responded favorably to the film. "There is a disconnect between how people react to the film and what the tracking is indicating," she said. The studio's concern is no doubt amplified by the fact that the movie may have cost some $250-300 million to produce and market. Analysts are also not betting that What Happens in Vegas will hit the jackpot. The 20th Century Fox film, the only other major movie to open wide this weekend, is expected to earn around $15 million, perhaps less.