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Traffic Booster honks at drivers as soon as the light turns green

The Traffic Booster is a simple little device: a few resistors, some switches, a box with a cheap car horn in it. The schematics are here for easy home replication, dog-eared copy of "The Anarchist Cookbook" not required. But the apocalyptic infuriation it causes is priceless, and if deployed across a city center, the ensuing riots will cause untold millions in damages.

GM, Chrysler sales fall more than 40 percent; Ford, Honda also slip

The biggest automakers posted some of the sharpest U.S. sales declines in September as demand dropped to its lowest level since April in the aftermath of the cash-for-clunkers program. The seasonally adjusted annual sales rate was 9.51 million units.

Hackers compromise Prius, seize control of wheel, brakes and more

As an enthusiast, you're probably already worried about an autonomous car ripping the joy -- and the steering wheel -- from your hands. Now, according to Andy Greenberg at Forbes, you also have to worry about hackers ripping the steering wheel out of your car's hands (boy, do we feel strange writing that). That's because a car's computerized systems are as prone to hacking as your malware-laden desktop.