shuttle train

you know you might have a point. the box doesn't say tomy? and neither do the instructions.
however, this is the second set.

now i'm not sure why these to sets are connected. 

That's all we need to find the first one, so there doesn't appear to be any connection between these and the Shuttle, as far as I can see.  The text at the top of each of these two boxes reads "Tomy - Panorama-Rail No.x". (So you can Google 'トミー パノラマレール No.2'  for example).

More pictures here.

And a video: (I know it says Plarail in the English caption, but then in the text underneath it says it's smaller than Plarail, and that perhaps it's "Plarail's Cousin").

Note that the colouring is identical to the Plarail Yuenchi:

And I found another video of the Shuttle Train: