Audi’s Q7 is a monster of an SUV, capable of towing big loads, carrying plenty of people or things, and generally looking imposing wherever it goes. Up until now, however, it has had pretty lousy fuel economy. But the 2009 Audi Q7 TDI shown at the 2008 L.A. Auto Show will change that, with fuel economy in the 30s on a recent mileage marathon hosted by Audi, the 3.0-liter V-6 diesel’s 406 lb.-ft. of torque is still plenty to tow 7,000 pounds if need be. We have to admit that we’re warming up to the idea of diesels, especially the newest generation of clean diesels by Audi and Volkswagen. When the Q7 TDI goes on sale next year, some of us might just be in line for one.