Today I parked next to a new Crosstour, which seemed to have every possible exterior accessory, including one I hadn't seen before. On the front side well above and behind the wheel arch there was a shiny maybe 3-inch-wide 'porthole" with a mesh screen. I didn't have time to wait for the owner to return. So, does this serve any purpose -- or is the owner simply lusting after a Buick?
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