From a practical point of view, adding all-wheel drive to the Lexus GS350 makes a whole heaping helping of sense. After all, every other car in this class offers an all-wheels-driven solution. BMW has its xDrive, Mercedes offers 4Matic, and Audi has its legendary Quattro system. While Lexus hasn’t thought up a clever brand name for its AWD, it has given us a week in the car to see how it stacks up in the luxury car marketplace.