Hou do I aquire duel state residency?

I'm retired. I don't work. I'm financially comfortable. I have a house in Vermont, I have a house in Las Vegas, Nv, which is my legal perminant residence where I vote and pay federal taxes. I co-own a condo in Ca. I travel around the U>S> and Canada> when ever and as long as I want to. I have a registered vehicle in Vermont, two in Las Vegas and one in Ca. Every thing is good untill I visit Ca. The F'N cops here are brutil when it comes down to my Nevada DL. They say when I come to Ca I need to have a Ca DL. How can I aquire a duel state residency so I don"t have to change my DL every time I visit CA? NOTE: No matter where I go in the U>S> or Canada my NDL is accepted but NOT In CA.....