My idea was to depict a highway system powered by wind, drawing air from the environment through the use of turbines and intake vents. The vehicle shown here is the Hyper Wing, a sail vehicle with an adjustable vertical fin to catch and manipulate the wind. Both highway and car are designed using green energy principles.
For more detailed description, see below:
http://forums.cgsociety.org/showthread.php?f=309&t=897075
