COBRA employees ride for free.
Side view: I'm not entirely pleased with the look of the individual cars, but they work well enough. I think I'll eventually build a wider wheel, allowing for larger individual cars. I'm not sure I have a means of making the wheel taller as the curviture is pretty much set by the pieces themselves. Maybe if I used straight beams and black 270 degree swinging connectors to create my own curviture?
You'll notice a wheel at the base of the car. This provides the necessary weight to keep the car tilting appropriately as it rotates around the wheel. Eventually, I need to get myself a working motor and automate this thing!