What metaphors are used in The Art of the Novel by Natasha Saje?

When the speaker says, "My odometer's clicked / past the point of counting," she realizes that the metaphorical car she has been driving on the highway has been driven for too long. She decides that it is time to get out and forge her own path in the real world, a risky endeavor for the speaker, who is accustomed to the safety of being guided through fiction. Now, however, she is ready to be her own guide and to engage the real world.