1 star for looking nice, minus 4 stars for the effort to build this. 

Beware; the tracks with the wheels on them were the big issue; every single track in here was unlabelled, though looked mostly the same. The tracks were also bent. Trying to screw the tracks in to the boards was difficult as the screws were too large for the holes, thus requiring a bit of maneuvering to actually get the proper screws into the holes. And due to the tracks being unlabelled, there was frequent deconstruction and reconstruction of this thing. Also bent and/or crooked brackets for the pieces underneath, pre-drilled holes don't line up there thus making it hard to fit together. Easiest piece is the lock screws. 

There is also glue involved. Buy with extreme caution.