(By James Callan, Bloomberg News) Restaurant company Denny’s Corp. and dog-food maker Pedigree are buying what General Motors Corp. can’t afford this year: a Super Bowl ad. For the first time in a decade, no U.S. automaker will advertise during the most-watched U.S. sports event when NBC televises the National Football League’s title game Sunday. “This year’s lineup of advertisers may be more …
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