A coworker took these pictures of driving at El Mirage dry lake bed…
http://404photography.net/elmirage/images/elmirage_11.jpg
Now that is some serious particle and volumetric lighting…
wow that is amazing refrence, i love how that smoke is lit up from inside. Can you post more of these?
Actually not smoke… just very fine dust…
http://404photography.net/elmirage/images/elmirage_15.jpg
http://404photography.net/elmirage/images/elmirage_14.jpg
http://404photography.net/elmirage/images/elmirage_22.jpg
http://404photography.net/elmirage/images/elmirage_09.jpg
This is something that I know VoxelB at DD can do really well, would be great to match it in Krakatoa.
Looks like they studied that for CARS. When McQueen is racing with Doc
you can see the great dust near the wheels. 
________________________________
From: Krakatoa_Discussion Listmanager
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Sent: March 20, 2007 1:23 AM
Subject: Krakatoa Reference?
From: “Christopher Nichols” (christopher@redeyetales.com)
Actually not smoke… just very fine dust…
http://404photography.net/elmirage/images/elmirage_15.jpg
http://404photography.net/elmirage/images/elmirage_14.jpg
http://404photography.net/elmirage/images/elmirage_22.jpg
http://404photography.net/elmirage/images/elmirage_09.jpg This is
something that I know VoxelB at DD can do really well, would be great to
match it in Krakatoa.
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that looks like a fun challenge indeed 
Chris