I was under the impression that most of the carbon fiber hoods out there were not only predominantly fiberglass with a carbon top layer but that they were also wet layup. Thus accounting for a majority of the weight.
"The 300ZX Turbo is a dance; it's a song; it's rolling, roaring automotive art. There is no color that doesn't suit it. There is no mood-lifting chemical substance it can't replace." - Automobile Magazine