I'm trying to absorb Ford's marketing for the just revealed 2015 F150. The most significant new feature, of course, is the aluminum body (fenders, hood, cab, doors, and cargo box). Ford keeps calling the aluminum ally "military grade", but I'm not sure what that means. It may just mean that the alloy they chose for the truck (something in the 6000 series) has an official U.S. military specification.
Ford's job, of course, is to convince the guys in Texas that the new truck will be as tough and durable as the steel truck. I think the up-coming webisodes about durability testing will go a long way towards that.