Edelbrock Performer Olds Intake on 2040-parts.com

Nissan Extrem concept

Nissan has unveiled its Extrem concept at the Sao Paolo motor show, a two-door 2+2 crossover that previews future Nissan design cues. The Extrem concept was designed at Nissan Design Center (NDA) in San Diego, California, in collaboration with Brazilian designers but much of the creative time was spent in Sao Paolo. "We call it Baby Beast," said Robert Bauer, Senior Design Manager for the project at NDA.

Peugeot teases Onyx supercar concept

Peugeot has teased a supercar concept dubbed the Onyx ahead of its world debut at this month's Paris motor show. The Onyx will be further developing the supercar concepts that we've seen the automaker unveil in the past – such as the SR1 convertible and the EX1 electric racer – and is likely to indicate Peugeot's future design language as well as that of the RCZ's successor. From the teaser images we can see that the Onyx has the classic supercar wedge shape with a cab-forward design and a rear spoiler that rises at high speeds.

Beauties and beasts, the AW list of 13 challenging routes

Everyone has an opinion about the worst road in America--usually it's one in their neighborhood. We poked around and compiled our own list of the 13 roads, highways and interchanges that you should pay attention to--for good or bad reason. Good traction and four-wheel drive can't shield you from falling rocks or shoulderless mountain passes.