The Mark One is the first 3D printer to be able to print with CF. This model only does up to 22.6-in wide, 14.2-in tall, and 12.7-in deep, but it's only $5000! A lot of money for something to put in your garage, but the price is reasonable for the small-scale manufacturer or tuning shop.
You can also print nylon or fiberglass on this machine, so you can prototype in a cheaper material than do the finals in CF. Custom CF ITBs anybody?
More info on Fabrication Life.