I saw a vacuum mold machine yesterday that is one of 5 in the country - new company. Pretty cool as they use silica (like sand) and water to make a slurry. There is a membrane on top of the sealed slurry filled "table" that the part is laid onto. They put a cotton blanket over the part and then a top piece to force the part into the membrane which makes an impression into the swet slurry. When the water is sucked out via vacuum and the top is removed the part has made a very nice impression into the now solid slurry which can be used to pull a mold.
CAD generated stereo-lithography can be used to make the part which the vacuum table is used for the mold.
All this is for work at a Army prototype facility. You can bet as I was fondling a half of a "suitcase" they made from carbon fiber I had visions of hoods and center consoles bouncing through my mind. Dash didn't cross my mind but that would be cool also.