While crossovers dominate the American highway, that role is taken up overseas by estate wagons. And few are as enticing as the Audi S6 Avant.

Offering all the creature comforts of the Audi A6, the S6 Avant ups the ante with all the cargo space you'd expect in a crossover with a rip-roarin' engine under the hood. In the case of the new model, we're expecting an all-new 4.0-litre twin-turbo V8 driving some 450 horsepower to all four corners through an eight-speed automatic transmission and Quattro all-wheel drive.

In other words, that Porsche driver will never know what hit him, but with this latest batch of spy shots, we now do. It's the clearest look we've had at the upcoming new model yet, revealing the quad exhaust tips, full aero body kit, big-boy wheels and no cladding. All it needs are a set of S6 badges and it's off for a record-setting school run.