a little test image i decided to post.
rendered for 18 minutes, using the windows x64 version.
path tracing, daylight system with sun on a shallow angle, white glossy car material with .17nm thin film coating and a bump map on the tires. (the tire letters)
the model has 7 million triangles.

memory of my GPU was 984 MB, just nearly full.
i rendered at 4x resolution, then downscaled with bicubic filtering.
it's also a model floating in air, there's no ground plane... i should have added one...
the sky was suposed to be more blue but the combination of sun angle and camera response curve and color correction in photoshop screwed it up a bit.
I will finish this scene and make some really spiffy renders of it when I have some time after beta2 is out of the door.
just a few days more patience and you will be able to render the same images, we're getting close

Radiance