Never mind the economy: Maybach is still making money. The 5.7-meter-long Maybach 57 and the 6.2-meter-long Maybach 62 remain—despite their bumper-to-bumper hand-craftedness—serious cash cows for Germany’s Daimler AG, the parent company of Mercedes-Benz. Derived from the previous-generation Mercedes S-class sedan, but priced some 400 percent higher, the standard 543-horsepower sedans …