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Chad Leachman, left, a graduate student in mechanical engineering from Ruston, Louisiana, tops off the Halo Car's power line drive opticool fluid. Assisting is Andrew LeClair, research engineer II at ÌÒÌ«ÀÉÓ³Ïñ's Center for Advanced Vehicular Systems. Leachman is the mechanical lead for the Halo Car, an all-electric sport utility vehicle designed to function autonomously in off-road environments.