A 22-Fillmore Muni bus begins its southbound run while Italy's Luna Rossa Swordfish (background) competes in the America's Cup World Series boat races in San Francisco, Calif. on Thursday, Aug. 23, 2012.  The America's Cup is one of the number of events in San Francisco the weekend of Oct. 6-7 that will test Muni's service. Photo: Paul Chinn, The Chronicle
{}