<human>: Condense the text into a few key points

My mother has been married for a few years to a guy who promised the world to her (who doesn't). He convinced her that with the money he makes ("song writer/musician") that she doesn't need to work any more and can retire. She left her job, packed up her stuff and left. 

Now, she has no savings, no job experience for the past 5-6 years, despises the marriage and wants to leave (already made this clear to the husband). The problem is, she would have no money and no car. The husband is extremely paranoid and keeps all the money within his own account and only gives money directly to her in cash, almost in a sort of allowance.

Can she leave and take the 1 of two cars that they acquired while they were married (he would keep the truck they have and the motor home). She just would like to take the car and her personal belongings, that's it. The car she wants to take was the second vehicle. They purchased it using only his name on the lease due to him having a good rep from the first car and better credit, but she is on the insurance. Would this prevent the car being community property?

Also, they are legal residents of South Dakota, CA. They currently reside in a motor home park that they have an interest in a plot in Nevada. Their marriage license is in Arizona. Not sure if any of this makes a difference.
<bot>: Mom wants to leave husband. Can she take a car that was purchased during the marriage but is only in his name (she's on the insurance though) and claim community property?