Ghost Parking Lot is the idea of James Wines and Emilio Sousa. There are about two dozen buried under blacktop. It is a public outdoor art that people can interact with. Even skate boarder use the ghost car to skate and do trick on them. This is similar compare to my final project but I do not think they have the same meaning.
When I render with final gathering in the previous post there was one side of the flow that was darker than the other. I am using a plane with Use Background material on it. By turning final gathering off for the plan it solve that issue.
In the Attribute Editor -> nurbs or polyPlaneShape1 -> mental ray -> turn off final gather reveive