picture description: This is a picture of a German automobile called the "Audi."  It is a model type called the "station wagon."  Audi automobiles have quattro, or all-wheel drive.  They are expensive and humans use them as status symbols.  Audi's most interesting model is the S-4 with a six-speed manual trasmission and 250 horsepower 2.7 liter biturbo V-6 engine.  It's most expensive is the 4.2 liter 300 horsepower A8, which features an innovative aluminum alloy body.