>the A8 has or will very soon have a 12 cylinder engine in the US
>it should be clear that the poster of the "W-16" comment made an
>honest mistake

However, a "W16" has been developed for the new Bugatti supercar.

>[kinda big and piggish, but nevertheless, it will have a 12 cylinder,
>I believe a "W" configuration, which is two VR6s together...]
>

Yupp. It's essentially two 24 valve VR6s mated at the crank. VW found the
benefits of this engine years ago with the Corrado SLC.