permeable driveways

So we need to choose the paving material between the concrete end of the driveway up to the garage. The stuff we really want is this:

We first saw it at a Cool Home Tour a couple years ago. In the forefront are the "pavers" (they appear to be Grasspave2 pavers), and the grass you see in the back is the result: A drivable lawn!

We've all been referring to this stuff as "grasscrete", but grasscrete is something different, namely concrete pavers with holes in them to allow grass to grow:

Grasscrete is, itself, rather nice stuff. Here's some with a gorilla:

Bomanite is a company that sells the stuff, but there are others as well.

The builder left a sample of Pavestone's grasscrete at our house:

But that isn't exactly what we're looking for. And furthermore, the paver-dude said that the grass in grasscrete requires irrigation to keep the grass alive (lots of drying out from the concrete).

This from NDS is more of what we are looking for:

When properly installed, these suckers (made out of recycled plastic) can support four tons: That's a lot of little cars!

Grasspave, Typar, and Hebden are other suppliers of this stuff.

TrueGrid is a supplier from Houston:

Also made of 100 percent recycled plastic (80 percent post-consumer).

Sorry: Couldn't find a photo of a gorilla with this stuff...

Some more information about permeable driveways from About.com, mygreenhome, Wikipedia, Apartment Therapy, and This Old House.