LOS ANGELES (AP) — California's Department of Motor Vehicles will miss a year-end deadline to adopt new rules for cars of the future because regulators first have to figure out how they'll know whether "driverless" vehicles are safe. The department doesn't have the expertise to create a safety standard and testing framework, so "the department wanted to get a very good sense of what is out there in the market," according to Russia Chavis, a deputy secretary at the California State Transportation Agency, which oversees the DMV and requested a deeper exploration of third-party alternatives to self-certification. [...] the department is asking industry, consumer groups and other interested parties to gather in January for a public workshop on safety standards. California's Jan.