I was there , it was a mad house with people, but still fun. there were about 5 1st gen Firebirds that I seen. Alot of GTO's and other Pontiacs Heres a link to somes pics and video http://www.sbsun.com/route66#
Make plans for next year its worth it. It will be the 3rd weekend in Sep. Book mark this site its the Route 66 site so you will know when next years event will be for sure http://www.route-66.org/
