New York - PepsiCo (NYSE: PEP) plans to offer a $1 million prize to the prospective creator of a Doritos ad for the Super Bowl that beats all of the other ads in USA Today's Super Bowl ad rankings, The Wall Street Journal reports. PepsiCo ran a similar user-generated Doritos ad contest for the Super Bowl two years ago, which generated a reported $36 million in free publicity. The Journal noted that Anheuser-Busch has won the USA Today Super Bowl ad poll every year for the past ten years.