The following words, terms and phrases, when used in this chapter, shall have the meanings ascribed to them in this section, except where the context clearly indicates a different meaning:
Any wheeled vehicle which is self-propelled or is intended to be self-propelled.
Any motor vehicle which, by reason of dismantling, disrepair, or any other cause, is incapable of being propelled under its own power, but has valid and current registration.
Any motor vehicle which, by reason of dismantling, disrepair, or any other cause, is incapable of being propelled under its own power, and is without valid and current registration.