It's Chris Harris's first group test of the new /DRIVE season, and he's gone all-wheel drive. He's matched up some potent German (and one modified Japanese) models. They do have one thing in common: They comprise one of the most intense rivalries in the sports-car world.

In today's episode of Chris Harris On Cars, Chris matches up a Audi's R8 Plus (with a new dual-clutch transmission), an on-its-way-out Porsche 911 Turbo S and a 750-hp Litchfield-tuned Nissan GT-R just for good measure. Game = on.