DETROIT (Reuters) - Volkswagen, the company long synonymous with the inexpensive Beetle, on Wednesday put a $94,600 price tag on ultra-luxury versions of its Phaeton sedan in the United States -- making it the highest-priced VW ever. Europe's largest carmaker began selling a 335-horsepower V8 version of the Phaeton last November at a price of $64,600. The 420-horsepower, 12-cylinder model, which VW touts as "the ultimate flagship of the Volkswagen brand," has only recently become available to U.S. car buyers. At a base price of nearly $95,000, the Phaeton W12 is the most expensive VW ever, Volkswagen's U.S. subsidiary acknowledged...