2015 has been the year of the performance car here at Ars. We've spent some time behind the wheel of some quite powerful and exotic machines, from high-powered luxury sedans like the Tesla Model S P90D and Audi RS7 to mid-engined supercars from McLaren and Lamborghini. With a couple of exceptions though, we've had to be content with driving all of these cars on the road. That's been both informative and fun, but if you want to really get to know a car there's only one place to push it to its limits: the race track. Unfortunately we weren't able to arrange a big track test this year, so we've done the next best thing—we conducted it virtually at the Circuit of the Americas (COTA), using Forza Motorsport 6.

Almost all of the cars we drove in meatspace are digitally recreated in Forza 6, although we are missing the Porsche 991S, Volvo XC90 T8, and BMW i8. For a couple of other models we've had to substitute slightly—Audi's more track-focused TTS stands in for the regular TT, and the Model S P85D represents Tesla, since there's no Forza P90D yet. And finally, we've used two coupes (Chevrolet's Corvette Z06 and the McLaren 650S) where the convertible versions were unavailable.

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