Think of the Cadillac XT6 as the gateway SUV between the compact XT4 and XT5 and the full-sized Escalade land yacht. Like the Escalade, the XT6 has three rows of seats, but it has more compact exterior proportions and utilizes a unibody architecture, which provides for livelier handling and easier maneuvering in tight spaces. There's seating for seven, though adults in the third row will feel pinched. The familial Cadillac SUV styling means the XT6 looks precisely like the Escalade's lighter, leaner little brother. Unfortunately, the interior's materials don’t follow through on the promise of the sharply styled exterior.