<< It's not owner, it primary-operator. You can be the primary-operator without being the owner. >>
Just to clear things up a little bit:
Well, I live in CA and I bought a car last October. I went to DMV to register the car in my own name. Next, I called up AAA to ask if they can add the car in my dad's insurance policy. They asked me if the car is registered in his name and I said no. They told me in order to have the car insured in his name, his name must be on the title of ownership.