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Even though I've spent a lot of time driving electric cars, the acceleration that comes with silent, instant torque can still raise my heart rate and elicit a nervous laugh. But this time, add in the fact that the driver of the new Mercedes EQC SUV looked like he was rocketing on a collision path with one of my colleagues, and my pulse spiked a little higher than normal. https://twitter.

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Whether you’re hacking a Roomba into a home-­security droid or assembling your own robocreation, outfit your workbench with these essentials. 1. Carbide3D Shapeoko 3 When an off-the-shelf part won’t do the trick, carve your own. This CNC router subtracts material­ from a block of wood, plastic, or aluminum with its quarter-inch carbide cutter to precisely shape any widget you design on your PC. The spacious 16 x 16-inch cutting area lets you think big. $1,099 2.

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In the past few years, wirefree earbuds have sprung up in lush profusion, like baby frogs after a spring rain. I have to admit, though, it took me awhile to come around to them. Wirefree earbuds don't always fit securely and they're usually more expensive than many of the best earbuds. I'm constantly knocking earbuds out of my ears while walking, working, or adjusting my hood, and I can't afford to be that precious about them.

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