The Rich Drive Differently, a Study Suggests

By Benjamin Preston, New York Times

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Now scientific research supports the unwritten and broadly circulated theory that people in BMWs are lacking in road manners. Paul K. Piff, a researcher at the Institute of Personality and Social Research at the University of California, Berkeley, has conducted a study linking bad driving habits with wealth.
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https://wheels.blogs.nytimes.com/2013/08/12/the-rich-drive-differently-a-study-suggests/