There might not be a surer sign you've landed in an emerging market than an unhurried, curiously badged Mercedes G-Wagon ranging past. Brabus is our OQ Upgrade this week. What is the most quintessential EM vehicle on the road? OQ would love to facilitate this debate. Is it for the masses: the mopeds and tuk-tuks? Or the newly-christened, understated king of Dubai : the Nissan Patrol? The upper echelon likewise features a crowded field full of sleek and, soon, evidently, even