But this one is yellow

After I stopped for a twinkie or two, I walked over to the Seven Corner New Seasons to pick up some peaches, plucots, and bananas. When I left the store, I heard the frantic tooting of a train heading northwards along the SPYellow Menace mainline through downtown, so I though I'd missed the last train for a while. But, no, when I reached Powell Street, I saw this train parked on the mainline, and by the time I'd crossed under the Powell St bridge, the train had started to move. So I had to take a picture, because otherwise how would I have my daily ration of yellow engines?