Communities from Pacific Palisades to Pompano Beach will quake with enough excitement to register on the Richter scale when word of the 2007 Mercedes-Benz GL-Class spreads among the nation’s affluent. This handsome new SUV, a seven-seater built on the same platform as the recently redesigned M-Class, represents the most appealing of the German automaker’s sport-utility vehicles, which range from the odd-looking R-Class sport-tourer on the car side of the equation to the combat-ready G-Glass military vehicle on the truck side. The conservatively-styled GL-Class neatly splits the difference between the wild R- and rugged G-Class models, while allowing its smaller M-Class sibling to serve the style-conscious crowd.