motor-cars-news.blogspot.com — The ritzy 2009 Audi A3 compact hatchback, based on the VW Golf/Rabbit but with a much more upscale look and interior, has long been available with diesel engines in Europe. Now Ingolstadt is pondering offering such a combo in the U.S., too. The vanguard: two A3 TDIs that served as part of the Audi Mileage Marathon, a long haul from New York to Los