GMC Granite Compact Pickup la auto showBy Matt Hardigree PO Edit11203L GMC Granite CPU: Honey, GM Shrunk The Caballero!There's an El Camino (or is that Caballero?) version of the GMC Granite Concept. It's called the Granite CPU, it has an expandable bed, and no one's seen until now. First photos of the GMC Granamino below. Read… 11/16/10 11:18pm 11/16/10 11:18pmGMC Granite Concept: God Is In The Details?