hey,
The contrast of the different spaces in your images is nice. There probably needs to be greater emphasis on the transport tubes. In our final images a closer view of theses elements may be appropriate. Maybe an image of a single tube protruding through a house is a good way to convey our concept. It would also be important to include some visual indicator emerging from the tube. This could include a dramatic lighting effect or an escaped item from the fun below, e.g. balloons.
Katrina