Glad to help. The pics were actually up last night. But I guess they changed something or we killed their bandwidth. LOL.
Here's a direct link. There are a LOT of video games with Buicks. Some GS 455 & GSXs in games, too.
IGCD.net: Buick in video games
I would hope a GN/GNX makes it into GT5. If not, they are slippin bad.