I have 5 older n scale Amtrak superliners and 4 brand new Kato Amtrak superliners. When you put them together, it makes a respectable train. Thing is, the train I rode on in the late 90's had one of those observation cars with the bubble windows that actually protruded above the roof line of the rest of the train and I would really like to know where to find one but can't seem to. Did they not make an observation car like that for the phase II/III versions? What'sa deal?