Ford also NEEDS to sell
Ford also NEEDS to sell trucks to make a profit unlike GM and Toyota that sell enough other products. While Ford's hybrid products are improving, it has long been the truck division and, in a small part, the Mustangs that keep Ford profitable. And, probably, more precise, it has been the King Ranch that has really helped Ford.
With a mostly forgettable car division, poor luxury division and a low-profit van division with its fleet focus, you could argue that trucks is where it is at. If Ford pulls off the aluminum-body and puts a hybrid in it with excellent fuel economy, it will go a long way into making sure Ford stays profitable. It also might help them salvage things in other markets.