you can junk your car but you will still owe the money. Turn in you plates and/or do whatever is necessary to terminate/cease the registration immediately so you do not incur additional/new charges.
To operate the vehicle you certainly need registration and license in the State of California. If you have not operated nor driven the vehicle in any fashion, you should check with the DMV and tell them the vehicle has been inoperable for this entire period of time. Before you pay, I would at least get a response. It may be possible you don’t have to.
I hope this is helpful.
John N. Kitta
Fremont