Finding the Best Car for Any Road
By Josh Jacquot, Senior Road Test Editor

The Test
The idea is simple: Find out if the quickest car on a racetrack is the quickest car on a mountain road. So we hit the track one day and the mountain the next. Then we ran every car through our standard acceleration, braking and handling tests.

We used the Streets of Willow Springs, a 1.8-mile natural-terrain road course, as our racing circuit. Then we ran that 1.8-mile section of GMR through the Angeles National Forest north of Los Angeles.

Our section of road included dozens of corners, including three 180-degree switchbacks, multiple blind bends and 721 feet of vertical rise. In the spirit of real street driving, we respected the yellow center line and used only one lane — just like we would if the road had been open. We recorded every lap of the track and every pass on the mountain road with our Racelogic VBOX (a GPS-based data recorder).

The Point
The groomed, glass-smooth surface of most racetracks is a far cry from the reality of uneven real-world roads where bumps, road paint, debris, blind corners and self preservation act as great equalizers. Racetracks are also designed to protect you from yourself. Run-off room, gravel traps and FIA curbing are there to keep you and your machine in one piece. On the road, mistakes come at a much higher cost.

Experience tells us big-power cars, which thrive on road courses, are often out of their element on tight mountain roads where rally cars like the Evo X and WRX STI do their best work. So these two genres were to represent either end of the spectrum. In the middle we knew we couldn't ignore the back-road brilliance of the 2008 Lotus Elise SC or the all-around poise of Porsche's 911. Audi's R8 and Nissan's GT-R, theoretically, represent the best of both worlds — big power combined with the confidence of all-wheel drive.

Some of you might also be wondering why we chose the base 911 over the much more powerful and all-wheel-drive-equipped 911 Turbo. The answer is simple: price. This base Porsche 911 costs about the same as the Nissan GT-R. We thought that was relevant. Just how much Porsche do you get for the cost of the big bad Nissan?

Other questions? Oh yeah. How about: On the street, does traditional go-fast hardware succumb to the long-travel confidence of an Evo or the nimbleness of a lightweight Lotus? How does Porsche's classic go-fast formula stack up against the current breed of machines? Is Audi's R8 as comfortable when driving hard as it is around town? Is the GT-R the quickest car on a track and a seriously tight mountain road? Can 3,900 pounds of rolling technology outrun 2,000 pounds of pure, focused driver's car?

The answers are below...