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Better lithium ion batteries have led to an explosion in availability of plug-in passenger cars. And now, thanks to relatively cheap electricity and the simplicity of the electric drivetrain, electric vehicles have even more potential for use in the extremely cost-sensitive public transportation arena--a concept that is only just taking root.

Herman Cain's 9-9-9 plan is is the legislative equivalent of Subway's $5 footlong campaign or Domino's 5-5-5 deal. It's sharply marketed to the fast food nation (just don't look too close at what's inside).

You've grown to 140 million tweets per day and impacted global politics.

Virtual-network computing is a no-fuss way to remotely view and interact with any computer. RemoteVNC provides secure log-on data encryption so that you can access your main machine even when on the road—and it's simple-to-use interface works between different operating systems, so you can use a notebook running Mac OSX to access a home machine running Windows 7 or Vista. (Unix is also supported.) Both Personal and Enterprise editions are available; customers who choose the latter also have access to the Viewer application for both Android and iOS, which lets users interact with their computer via certain handheld devices