A predicate nominativeis a noun or pronoun that completes the linking verb, renaming, identifying, or explaining the subject.
The subject is what the sentence is about. It tells us who/what performs the action expressed by the verb or who/what is being described. The subject of the given sentence is <em>the car.</em>
The linking verb used in the given sentence is <em>will be</em> (<em>to be</em> in the future simple form). It can't be used on its own and needs to be completed by another word or phrase. In this case, that word is<em> yours</em>- a predicate nominative.
