You may permanently junk a vehicle which you no longer want regardless of whether or not the registration is current or expired. When you permanently junk your vehicle, you are declaring that the vehicle will never be registered again. Remember, you are responsible for the proper disposal of the junked vehicle in accordance with State of Hawaii Laws.
Important Notice: If there is a possibility that you may want to register it again in the future, do not permanently junk your vehicle. Instead you should consider placing your vehicle in official "storage" status just in case you want to register your vehicle again in the future.