Lincoln's new Blackwood is a curious creation, almost as noteworthy for what it isn't as for what it is. It is not a sport utility. While having four doors and casting a larger shadow than the Ford Navigator, it carries only four occupants. And the luxuriously appointed cargo space behind the second-row seats can't be accessed from the passenger compartment. It is not a pickup. The bed is topped by a power-operated, forward-hinged, weather-proof, lockable lid that caps cargo capacity at 26.5 cubic feet. The bed's carpeting, brushed-aluminum sides and LED lighting will leave stockers at the local home improvement warehouse store laughing. But it will give two couples plush, commodious transport for a night on the town. And the bed will accommodate a threesome's golf bags with room to spare. Perhaps what matters most is few buyers will see another on the road. Lincoln is limiting production to less than 10,000 per year. Exclusivity adds to its appeal, say Lincoln marketing executives.