gas guzzler vs winter rat

gas guzzler

noun
  • A vehicle that consumes a large amount of fuel. 

winter rat

noun
  • An old, unattractive automobile, purchased for little money, to be driven during brutal Great Lakes winters while the owner's "good" car remains garaged and protected from corrosive road salt for the season. 

How often have the words gas guzzler and winter rat occurred in a corpus of books? (source: Google Ngram Viewer )