In April 1975, a circle excursion was run on the SP lines Oakland-Fremont-Niles Canyon-Pleasanton-Altamont-Tracy-Martinez-Oakland, California.? The train had 5 ex-SP Fs, a dozen or so ex-SP cars that Amtrak used for the Reno Fun Train and extra cars on west coast trains as needed and private car La Condesa on the end.