SANTA CLARA, Calif. -- The San Francisco 49ers are rolling with the Man in Black.Leave it to coach Jim Harbaugh to make late country singer Johnny Cash a figure in this week's NFC championship game at the Seattle Seahawks.This will be the 49ers' third straight road playoff game. They won at the Green Bay Packers and at the Carolina Panthers. This is also the team's fourth straight road game (they ended the regular season at Arizona) and the fifth time they've played away from Candlestick in six games.