Here’s a scenario you’ve probably encountered at least once: you’re driving along the highway, doing your best to stay in your own lane, when suddenly, beneath your notice, you drift ever so slightly out of the lines. Suddenly, you hear a distinct grinding sound coming from beneath your car, accompanied by an unpleasant vibrating sensation. Startled, you grip the wheel and course-correct, and sure enough, the sound and vibration disappear. Have you just been visited by some kind of
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