i hope they do a good job of implementing the extensive alum use; as it has a pretty poor fatigue life compared with traditional steels.
An example would be an aluminum bodied audi losing 50% of its structural rigidity after 5 years of normal driving, due soley to stress cycles and not designing around it. (after all, if the car gets creaky down the road you'll probably want a new one!)
bottom line, i hope they continue designing with sound engineering principles in mind. so far they've been pretty decent
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