There's an informal gathering open to any EV owner/curious individual that meets on Saturdays in certain locations. It's generally posted to all of the forums but I see this one was skipped. I myself have never gone but I know there's usually a good handful of people.
See here for the original posting:
http://www.mychevysparkev.com/forum/viewtopic.php?f=2&t=3432&start=0
Upcoming dates are:
SoCal EV Meet Up Saturday, Nov 29, Temecula
SoCal EV Meet Ups in Orange County, San Diego County, Riverside and Los Angeles County:
All meet-ups on Saturday:
Nov 29, 2014 - Temecula CA (Riverside County) 9 am - Noon, Hometown Buffet, 40390 Margarita Rd Temecula, CA, 951-694-1116, behind Lowe's
Dec 6, 2014 - Cerritos (Orange County), 8am to 11am, Hometown Buffet, 11471 South St, Cerritos, 562-402-8307
Dec 20, 2014 - Santa Ana (Orange County), 8am to 11am, Hometown Buffet, 1008 E 17th St, Santa Ana, 714-541-3020