When it was first rolled out three years ago, the Audi Q7 performance SUV immediately achieved a leadership position - as a sporty, comfortable as well as high-performance recreational and business vehicle on a grand scale. Now Audi is making it even better - more elegant and more efficient, with lower emissions: the Q7 3.0 TDI consumes only 9.1 liters per 100 kilometers (25.85 US mpg). And now it's also available in a new version as...