A hybrid Panoz was qualified at Le Mans in 1998, but withdrawn for the race. There are no clear rules about hybrids yet. Zytek (who also built that Panoz) have been in discussion about hybrids for a while with the ACO. The problem is that electric motors can not be limited/governed.
If you should see a man walking down a crowded street talking aloud to himself, don't run in the opposite direction, but run towards him, because he's a poet. You have nothing to fear from the poet - but the truth.
(Ted Joans)