The H3's available oversized sunroof was removed and replaced with an even bigger fabric roof on this 2006 SEMA concept. It's supposed to give passengers a safari experience, though we're guessing the only jungle most H3s see is the urban one. The Open Top concept also has twenty-inch wheels and a host of Hummer accessories that are available at dealers, including black chrome accents, DVD rear-seat headrests, a cat-back touring exhaust, and extra exterior lighting.