In the Sac area the car events are
http://www.carsandcoffeefolsom.com/
http://www.eurosunday.net/
http://sacramentoraceway.com/wednesdaynight.html
http://www.thunderhill.com/
http://m.racesonoma.com/
http://www.norcalcamaros.us/
I have yet to hear about any Camaro theft in Sac reported to the Nor Cal Facebook page. The bay area is a different story. I don't take my car there unless Im just driving straight through. Some Bay area members have installed the Ravelco device. It did save one ZL1 in the San Jose area.
So.far the known method is.
Kick in fog light and cut alarm wire
Break door lock
Replace ecm with hacked ecm
Disconnect onstar
Gone