SAN FRANCISCO (AP) — While Metallica has steadily attracted more of a mainstream audience throughout its 35-year career, frontman James Hetfield feels they will never play the Super Bowl, and he doesn't seem to mind. "As far as us playing halftime for the Super Bowl, I have a feeling that ship has passed," Hetfield told The Associated Press before a sound check on Friday in San Francisco. He added: "We're not a variety show.Read more on NewsOK.com