Carmax, the leading used car retail super store in the United States, is also the pioneer of the global super store. It has a brand-new business model. It was founded in 1993. It has different models and styles, clearly marked prices, vehicle warranty and identity authentication. It is the only one in the world to be listed in fortune by selling used cars Top 500 enterprises. In 2007, Buffett bought the company's maximum shareholding limit of 15%.
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