A concealed LOADED long arm in a vehicle would be a violation of law. Since according to the California penal code a long gun cannot be listed on a concealed carry license as they would not be capable of being concealed upon a person.
As for legal open carry of a loaded hand gun. Only in a very few specific situations, and generally not in public.
A concealed carry license is just that alone, a license to "carry a concealable firearm concealed".
Nothing more....
It does not allow you to carry loaded long guns in vehicles.
It does not allow any open carry other than what is legal during some very specific situations and at specific locations.

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