We appreciate the 2014 Chevrolet SS. It is a solid take on a classic American sedan: big V8 in front sending power to the back. But there are ways it could be better. Like supercharging it and making it a wagon.

That's what they have in Britain as the Vauxhall VXR8 Supercharged. And it's a 600-horsepower brute that can haul ass and luggage, as Richard Meaden of EVO finds out.

It's a brute that happens to go up against the Audi RS6 Avant, a calculated and capable machine.

Now there's one that's faster, and one that's more entertaining. Guess which is which.