JLR has announced a fifth member of the Range Rover family, and it's likely not what you think of when you envision a Range Rover.The Range Rover GT prototype stretches the definition of an SUV "coupe" with its long and low proportions that give it sort of a sedan vibe.The GT will ride on the company's new EMA architecture and will be powered by an electric powertrain; the production version should be revealed early next year.