What that scientific study did not include, is an evaluation of the BMW drivers IQ. However, I have a first hand example, which is rather telling:
At Home Depot, I saw a BMW driver (one of the largest sedans) show up to collect a custom order, consisting of matching toilet & bath tub. Despite both items getting unpacked, and the best efforts of two HD employees, they were unable to fit either item into that vehicle.
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Every MAPSOdian knows we have an obnoxious driver problem in these parts. If you don't know, you're definitely part of the problem. Now we have science revealing issues - namely, drivers of luxury cars. They even offer a specific shout-out to BMW drivers. btw ... Did you know "BMW" is German for "I'm a pretentious d-bag"???
https://www.cnn.com/2020/02/26/world/expensive-car-drivers-study-scli-scn-intl/index.html
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