Google X's secret gadgets

How and where is Google's 'Project Glass' being developped? You can find out by looking at posts shared on Google Plus by the company's team leaders: Babak Parviz, Steve Lee and Sebastian Thrun. The whole project is still ongoing and operating in secrecy in a laboratory known as 'Google X' located in the Bay Area of Northern California.
Here is  a video filmed using those glasses while jumping on a trampoline: