Mercedes-Benz’s all-new 2012 M-Class (or ML) makes its on-the-road debut in the U.S. this week so the German company decided to drop a new batch of images for our viewing pleasure.The Stuttgart firm’s new luxury SUV enters the 2012 model year in the U.S. with a choice of two models. First up is the diesel-powered ML350 BlueTEC delivering 240 horsepower and 455 lb.-ft. of torque, while averaging