It's been a while since I have seen something on the street worth posting, but this is a not everyday car. This is the Holden Commodore SS V-Series, spotted in downtown Birmingham, and it will be the basis for the 2008 Pontiac G8.
Is this significant? Some people have argued that Pontiac is irrelevant and has run it's course (new Torrent, anyone?), but this could be the kind of car that revitalizes interest in the brand. If it's fast, high-quality, and not woefully inefficient, it has a good chance of doing that. It does not have the visual flair of a Chrysler 300, but everyone who wants one has one at this point anyway.