I saw a news item recently that Ford has posted a "build your Fusion" web site (here). What is new about this is that the Fusion is not in production yet--Ford is polling the customers, to see what build combinations are most popular.
My biggest disappointment with the Fusion is that it will not come in a V6 + manual combination. If you want to row your own, you have to buy the 2.3L I-4, which will not be exactly sporty--I would guess 0-60 times in the 9s range. Mazda was caught off guard when many more customers than expected, seeking zoom-zoom, wanted to buy a Mazda6 with a V6 and manual transmission.
Ford has added a "Future Options" screen to the site. They offer a list of possible future equipment, such as AWD, V6 manual, navigation system, stability control, etc.
This is a great idea. All carmakers should set up web sites where potential customers can configure their preferred combination. If they do this well enough in advance, say when a concept is unveiled at an auto show, by the time production comes around, they will have had time to adjust the product.