Hi,
this is my first finished work in Blender.
It’s an old german construction kid for children called Fischertechnik that was my favored toy.
The scene is full rigged with bones and constrain (gears, wheels ) so the animation looks real.
The seats follow the ring-track by a Shrinkwrap-Constrain when they rotated around the middle axis.
The image is rendered using 200 diffuse und 400 glossy samples.
I do not have a powerfull computer, but I try to render some animations 
