By Russell Ray, Tulsa World, Okla. Knight Ridder/Tribune Business News
Mar. 9--On May 1, Citgo Petroleum Corp. will launch a marketing campaign that recognizes the purchasing power of Hispanics, the nation's fastest-growing consumer group.
For years, the company's marketing efforts were aimed at a broad national audience, focusing on popular events such as Nascar races to pull consumers into its 13,500 branded gas stations and convenience stores.
Now, the nation's fourth-largest gasoline retailer is narrowing its focus, targeting markets wit