Take the five-liter supercharged V-8 from the Jaguar F-Type and tune it up to 510 horsepower. Slip it, and an eight-speed transmission, under the bonnet — sorry, hood — of a new, all-aluminum Range Rover, one that’s lost 800 pounds but is bigger inside. Add the latest on- and off-road performance hardware and software, and wrap it all up in the creature comforts of a deluxe sedan.