Bankruptcy Law Questions? Ask a Bankruptcy Lawyer.
Each Bankruptcy filer is allowed to keep one motor vehicle with a value of $2550 or less (plus the cost to sell the car).
Given the information you provided, there is nothing the creditors can do to you if you stop paying, as you do not have significant assets, and you have no wages to garnish - unless you have more than $1350 in the bank.
I just noticed you purchased your mobile home in 1968. Since it is older, you will be able to use all or part of the Homestead exemption for your car, since you will not need it for your home - if you file a Bankruptcy. This will give you an additional $20,725 equity that can be applied to one or more cars. Also, if you choose this option, you will also have a $3300 motor vehicle exemption, instead of the $2550.
In any event, the additional exemption amount for a motor vehicle is only available for a Bankruptcy filing - if you do not file a Bankruptcy, creditors can take a motor vehicle if the value is more than $2550 (plus the cost to sell it). California Stat. 704.010.