Pope Benedict XVI is seen leaving St. Peter's Square on his pope-mobile after his last general audience, at the Vatican, Wednesday, Feb. 27, 2013. (AP Photo/Dmitry Lovetsky)

Photo by: Dmitry Lovetsky

Pope Benedict XVI is seen leaving St. Peter's Square on his pope-mobile after his last general audience, at the Vatican, Wednesday, Feb. 27, 2013. (AP Photo/Dmitry Lovetsky)