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Mercedes SLS AMG Black Series (2012) first pictures

We’d be most surprised if you rejected the Mercedes SLS AMG for being too slow and too subtle, but if you crave a few racecar touches for your gullwing supercar then Mercedes will oblige with this: the SLS AMG Black Series. Like the ‘BS’ models that’ve gone before, the SLS Black employs a weight reduction, ramped-up power and better aerodynamics to give more extreme looks and performance. Read on for the full spec of a Mercedes with more power than a McLaren 12C Spider.

Renault/Lovegrove Studio Twin'Z concept

The Renault Twin'Z concept is a collaborative project with British designer Ross Lovegrove, filling the fifth stage in Laurens van den Acker's 'lifecycle' – Play. It's currently on display at the Milan Salone. Essentially previewing the all-new, rear-engined Twingo co-developed with Daimler, the Twin'Z takes this relatively humble city car and, thanks to the input of Lovegrove, it appears to have taken on an organic nature, which shouldn't be unexpected to those familiar with his work.

GM contacting Chevrolet Volt owners as NHTSA investigates battery fire

General Motors on Monday said it is contacting all owners of the Chevrolet Volt plug-in hybrid to reassure them that the car is safe as the National Highway Traffic Safety Administration investigates a battery fire from a Volt that was crash-tested. GM said any Volt owner who had safety concerns would be offered a different GM car as a loaner vehicle. Executives also stressed during a teleconference that the battery issues were seen only in vehicles in the crash tests.