Pepsi bottles featuring the iTunes free song promotion are taking longer to get into stores than expected. “Specially marked bottles of Pepsi, Diet Pepsi and Sierra Mist offer free download codes in bottle caps,” USA Today reports. “But they arrived in New York last week, four weeks after 90 million viewers saw the Super Bowl ad. The bottles have yet to show up in Los Angeles, the nation’s second-largest media market, and won’t get there until mid-March, Pepsi says.”