[markjohnson]

That has to be that well-photographed black with gold trim GM press car. I want to say it had four wheel disc brakes and a lower compression ratio for street driving. De-tuned a little for street use compared to the radicalness (is that a word?) of the regular 69 ZL-1 race cars. Shame it never made production. Martin Schorr released a book back in the eighties that had several pictures of it.