Well, its definitely not a surface you will want to play football on but its more pleasing (and more sustainable) than staring at a empty parking lot. Its grasscrete...a hybrid of sorts combining grass and concrete. And CNET reported that the 2008 Olympics will feature grasscrete footpaths as part of the 680-hectare Olympic Forest Park development. Pretty cool. Actually, I could use some grasscrete on my driveway...when I wash my car, the water runs into the neighbors yard.
What's cool about grasscrete is its durability. Grasscrete areas can handle large amounts of foot or vehicular traffic (strong concrete infrastructure) while maintaining a cool grass appearance. Its perfect for parking lots, driveways, or other access roads. With the price of concrete going up (driving up construction costs) this permeable pavement could be an interesting alternative. From a design perspective, all the holes (meant for grass) don't have to contain grass. Crushed stone or other recycled materials can be used in place of grass. Grasscrete areas typically drain in similar fashion to that of ordinary lawns...the type of soil used and the slope will affect water drainage more than the presence of concrete.