Mazda grabbed a lot of attention when they announced the MX-5 RF Edition. The Japanese carmaker truly nailed the look with its fastback styling and the retractable hard-top roof. For this year's SEMA, Mazda presents a new concept of the RF called the "Kuro." Meaning charcoal in Japanese, the exterior is painted in a semi-matte metallic black finish. You've also got RAYS forged wheels, BFGoodrich Rival G-Force tires, and an adjustable suspension from the Battery Tender Global Mazda MX-5 Cup car.