Sizzler,
The aluminum Taurus has been "in the works" since I was in college--15 years ago. Aluminum is just not as easy to work as people think...hence, to answer Brett's question...the price.
It is one thing to have a body already made for you and sitting in pieces in front of you. It is a whole different world to make that body fit and look nice on a frame. We figure 1/3 of the time is making the body; 1/3 of the time is welding all the body panels together; 1/3 of the time is MOUNTING the body on the frame.
Fluidform may hand you the body in pieces (not nearly all of them, I might add), but you are not even 1/2 way there. (Not to mention their presses are ALL over $500,000 to purchase--even for the small ones.) You have to make a lot of aluminum bodies to pay for that one machine which only gets you 1/3 of the way there. The other 2/3's is similarly priced.
David