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Banner's T30 sensors take a test drive with a Mars Rover! You can see them located just above the Scarecrow Rover's wheels, which was used in a dry run in the California desert to test the rover's navigation and how well its wheels handle real sand dunes.   
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fantastic post!  who brought this one back to HQ?
A little research and some help from Daryl H. helped us track down this article. Definitely a team approach.