Next March 13- 16, TechFest West 2003, a huge BMW CCA event will be in SoCal:

http://www.bimmerforums.com/forum/showthread.php?s=&threadid=57999

It looks like it's shaping up to be an event on the scale of something like Oktoberfest. Can you say party?

Another thread talks about some projected costs, etc.:

http://www.bimmerfest.com/forums/showthread.php?s=&threadid=17392