FitBit has long been doing fitness wearables a lot longer than others, but now it's taking its heath-tracking technology to the next level with a fitness wristband — and it's one of the most impressive options we've seen so far.

The water-resistant FitBit Flex wristband tracks just about everything you do — from the steps you take to how well you sleep — and can even handle laps in the pool. Although the FitBit Flex was first announced at the 2013 International Consumer Electronics conference in January, it's been generating significant buzz since it's May debut. Read more…

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Buckle up, because you're about to experience the Audi S6, one of the fastest sedans in the world. Besides its muscular performance, it's bristling with the latest car tech, so advanced that it gives you a hint of what's to come in the future of self-driving cars.

Audi lent us this car for a week, giving us a close-up look at the most advanced technology available in cars, circa mid-2013. The option-packed Audi S6 we tested ($87,720) is not the most expensive car from this upscale German automaker, but it's high enough on Audi's hierarchy to show off the tremendous power and astonishing technology of today's best cars. Read more…

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