Thank you very much for the question.
The material that was used in this park is a porous concrete. In very basic terms, it's a concrete with lots of holes in it that allow water to penetrate back in the ground and replenish the ground water.
This is an example of the sustainable technology or a technology that can be used in different applications—not in all applications, but for parking lots. As Ms. Patterson mentioned, it can be used to deal with rainwater and rainwater run-off, especially in impervious areas or in parking lots or sidewalks.
The largest thing the federal government can play a role in is really the policy and the adoption of these technologies beyond their demonstration. I think Ms. Patterson alluded to that regarding the ecoENERGY guides or in Energy Star—not necessarily as much for certification as for education and highlighting which technologies do what and what their purpose is in our built environment. I believe there's an opportunity to provide that sort of educational information, and then eventually incentivizing the builders to do it.