Introduced at the 2010 Detroit Auto Show, the Granite “urban utility vehicle” is reportedly underpinned by a version of GM's global Delta architecture also used by the Orlando small crossover. At 161.3 inches long, by 70.3 inches wide by 60.5 inches tall, the Granite concept is too wide, squat and short in length to be a minivan; too short in the nose and close to the ground to be an SUV.