That back window looks funky, not sure I like that little sliding part at all.

If they can get more use out of aluminum on these things, that would be fantastic. That would bring the weight down on these things significantly (I know, Captain Obvious in the house), and would really benefit the real-world gas mileage improvements, particularly around town. These EPA stickers are full of it.

With regards to being totaled after an accident or being harder to repair because of the aluminum, remember how high these trucks are off the ground vs. other cars. Typically, these trucks will take less damage than a "normal" vehicle (per my insurance company when I asked why the premium was so low compared to my last car). Also, you can't compare an aluminum truck to an aluminum audi with regards to cost of damage....the mechanical and electrical systems of those cars take a lot more damage in a collision due to how tightly packed everything is under the body panels.