Carlson is an idiot. It is here: all he has to do is some repairs, himself, on his Mercedes or, even his Cadillac. I bought my first metric set of wrenches in the early 70's. What a douce. Surprised he isn't whining about Ford Mustang being 5 liter. Kids today who talk cars and motorcycles all talk in metrics; even rednecks riding Harleys have 1000 cc. BTW: in 1976 the U.S. government made the metric system our official measurement system. True. Oh, the Congress added an amendment that said except where said users didn't want to use it. At the time though, the country had a more science base and doing so allowed us more access to science areas world wide.