There goes the Viewliner, on an exciting figure-eight through parts of Tomorrowland and Fantasyland! The Viewliner was basically a scaled-down version of General Motors' Aerotrain, and it survived at Disneyland for only 15 months before being removed (and eventually replaced by the Monorail in June of 1959).
This Tomorrowland Viewliner had cars that were named after planets, while the blue Fantasyland train had cars named after Disney characters. For some reason the blue Viewliner seems to have been photographed much less than its sibling, maybe they didn't run it all the time? For a nice color photo of the blue train, see "Disneyland: The Nickel Tour".
It's pretty interesting to compare this photo to yesterday's post, and observe the considerable changes that occurred in just about a year. And for those of you who are interested (DisneyDutchman!), you finally get a pretty good look at the back end of the Viewliner train...I've provided an enlargement for ya.