Artist Luzinterruptus fitted 10, 000 books that had been discarded by public libraries with LED lights and covered the streets of Melbourne with them, and in an exciting development the much-anticipated Low Line underground park in NYC debuted a full-scale model of their incredible fiber-optic solar-concentrating technology in New York City's lower east side.

ENGADGET: Inhabitat's Week in Green: GPS shoes, shape-shifting bicycle and a wheelchair helicopter

Lachman explained a complex financial model he developed that assumes Google Fiber eventually gets 15 million subscribers.

FORBES: Will Google Fiber Waste $28 Billion?

The production model is a polished-looking assemblage of aluminum and judiciously placed titanium and carbon fiber, along with sensors, motors, joints, off-the-shelf DSPs and custom circuitry and software.

ENGADGET