BY BRIAN LEON
It may have happened quietly, but diesel has become more and more popular right here in the good ol’ U.S. of A. Gone are the days of smelly, smoky, inefficient Oldsmobiles, and in their place are clean, modern, and unassuming oil burners, largely thanks to the prevalence of German automakers. But look closely, and you’ll see that even some American companies are starting to play ball too.
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