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GMC Granite Concept

The compact-sized Granite crossover concept shown by GMC at the Detroit Auto Show proved extremely popular with attendees, and the “Professional Grade” division at GM really wants to put it in production. According to new GMC product marketing director, Lisa Hutchinson, the main stumbling block right now is figuring out how to build the doors. The Granite featured the same rear hinged back doors that are commonly used on concepts to show off the interior.  The goal is to retain the door design for production to maximize access to the rear seat. However, the doors will have to be engineered so that the car can pass side impact safety requirements, an extremely difficult task without a fixed B-pillar, especially on such a small vehicle. Source