Google is now an automaker of sorts. It has built a prototype of its long-brewing self-driving car, which looks like a mix between a Volkswagen Beetle and a Smart Fortwo. The car features no manual controls, and, as a precaution, is limited to 25 miles per hour. Google has produced a video showing it being test-driven by a number of people — including a blind man. follow link
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This trick has been available in the Mac OS for years, but many people still don't know it. If you have too many windows cluttering up your screen, you can hide specific ones easily as you work. When you're in any application, hold down the Option key and click on another app's window, on the Dock, or in the Finder to switch to that other app and simultaneously hide all the windows in the previously current app.
Google Unveils Its Self-Driving Car