‘Shedding weight has helped create a new Range Rover Sport that drives like a sports sedan,’ writes Road Test Editor Howard Walker. Eight hundred pounds. That’s a couple of Sumo wrestlers on a Brie and burger diet. Or a Budweiser Clydesdale, plus a keg or two of the famous brew. Or the heft of an aptly named Harley-Davidson Fat Boy. Eight hundred pounds is also the considerable poundage that Land Rover has shed from its Range Rover Sport luxo-4x4 to create this all-new sexy version. That...