This image was taken in the clean room where the Curiosity rover is being assembled.  It shows the rover, which is about the size of an SUV, hoisted on a white lift, with its black wheels suspended in the air.   One engineer is on top of the hoist and is leaning over the rover body, while another is looking up on the ground floor to the right of the rover.  Both engineers are wearing white "bunny suits" to keep them from contaminating any equipment.
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Image Credit: NASA/JPL-Caltech