Could Coca-Cola make you a millionaire? The quick answer is yes, but only if you pay the right price.One of Warren Buffett's largest and longest held investments is Coca-Cola (KO 0.77%). For some investors, knowing that Berkshire Hathaway (BRK.A 0.91%) (BRK.B 0.83%) owns a stock is enough reason to buy it. But there's a major caveat here, because Buffett has owned Coca-Cola for a long time. So the question today is whether the drink giant can make you a millionaire from this point, not how well it has perfo ...