The Salute to American Graffiti 2011 is on May 19,20,and 21. I went last year in the daily driver just as an outing for the day. It was huge and apparently sold out in 2 or 3 days as it already has this year. They have a ton of activities above and beyond the normal car show.
I've spoken to several BACC guys and I guess quite a few are going on Sat and (or) Sunday because it's in their back yard.
As I said, the show is sold out but it's one worth attending if you are up to the drive. Here's a link........
http://www.americangraffiti.net/