A lot of speculation has been made with regards to the SS, the promised new Chevrolet rear-wheel drive performance sedan. The Holden Commodore-based muscle saloon will be prowling the open road as early as next year, while a NASCAR version is set to compete in 2013. Shots of the cars testing in their respective natural habitats have led to endless speculation, and it appears we now know which car will debut first. Word from Speed is that the 2013...