Model was modified to be stationary. This particular version hasn't been printed yet. Requires glueing and filing.

0.2mm is fine. For the restraints and seats you might want to experiment with more detail. Track needs printing supports.

For full model you need: -track x1 -support x2 -support_connection x2 -car_base x3 -car_cover x4 -car_base_front x1 -car_cover_front x1 -seats x4 -restraints x4

The base and cover of each car are glued together. Then the seats are glued in the corresponding slots of the cover. The restraints clip into the car base and should be somewhat moveable. Lastly the cars are clipped together aswell. The joints probably require filing.

The support connection goes on top of the support and then clips onto the track.