rustbucket vs tin Lizzie

rustbucket

noun
  • An old, neglected vehicle, usually a car, a freighter, or a truck. 

tin Lizzie

noun
  • A small, unpretentious, vintage automobile, especially one that is in run-down condition. 

How often have the words rustbucket and tin Lizzie occurred in a corpus of books? (source: Google Ngram Viewer )