Here's the Camaro I did for the contest. I'll upload the final image in the contest thread and the wip and octane proof picture here.
I did the render in stages with different camera settings for color and combined the images together to eliminate fireflies and goofiness...
I used a EVGA GTX260 2nd Edition at Default clockspeeds for the render / CPU E6600 @ 2.7 / Memory: Patriot Extreme 4gigs @ 800
Model in Blender3d / this was a model I've had laying around for a couple years
1st screencap / you should be able to see the Octane information at the bottom of the picture
2nd screencap
3rd screencap
4th screencap
5th screencap
6th screencap
Final Image / combined with all layers, despeckled and added text