There are a TON of people in the Fairfiled/Vacaville area that like to ride in the Napa area, also Lake Bereyessa (sp?), most are from Travis AFB. I have been out of that loop fpr about 4 years, but it is always active... you might try a web search for Breakfast Riders and similar groups.
"I often wonder why I talk to you, then I realize, although you put me down, you do it with love." - Jester