one of the local tuner shops by me sells Carbon Fiber mat, but it's real expensive. Try a google search for carbon fiber mat.
You can work with it like fiberglass, but fabricating fiberglass parts can be tricky.
If the issue is weight savings, just work with fiberglass and paint it; it's cheaper, and a good way to learn before you mess up a part with the expensive Carbon Fiber matting. Most Carbon Fiber parts have a fiberglass core anyways, because Carbon Fiber is somewhat flimsy by itself. Make your parts out of fiberglass, and laminate the final layer using carbon fiber mat. that way, you use less Carbon Fiber, the part is light, strong, and will look cool.