Californa attorney general Jerry Brown had his car broken into in San Francisco the other day. It happened in broad daylight, across the street from City Hall. Crack kills. It gets your GPS unit stolen too.
Anyways, apparently last year there was an average of 43 car break ins a day in SF. Supposedly, there are now just 32 break-ins a day. But, there is also the fact that many people don't report break-ins at all, especially people who've already had their car broken into in the past. Plus, unless it's important for your insurance, the police may tell you not to report it.