According to the Carpoint site:
<< A pickup truck, an SUV, a five-seat convertible with the looks of a strange, futuristic wagon. It's all at the GMC display and it's all in one concept vehicle, the Terracross. This squarish, strident vehicle with GM's Versatrak all-wheel-drive system includes one big sunroof packing three glass panels that can be moved electronically to various positions. If stacked on top of each other, fully two-thirds of the Terracross roof length is open to the sky. When opened to their most forward position, the sunroof panels help build an open cargo box at the back of the Terracross. You really have to see it to believe it. Powered by a 185-horsepower 3.4-liter V6, the Terracross sits up well above the ground and rides on 19-inch wheels. >>
It's a combination of 4 different vehicles. 🙂