drive-in vs seventh art

drive-in

noun
  • An outdoor cinema where movies are projected onto a large screen and patrons watch from inside their vehicles, listening either by a speaker or a designated radio frequency. 

  • A restaurant where patrons remain in their vehicles to consume their meals; the meal may be ordered and delivered to one's vehicle by a carhop waiter; or may require patrons to use a service counter. The cars in the parking lot serve as the patrons' dining room, there being a lack of dining rooms and tables. 

  • A drive-through restaurant where patrons remain in their vehicles and order food and beverages via a speaker phone; the meal is delivered by a service window accessible by car. 

adj
  • Providing service to patrons who remain in their automobiles. 

seventh art

noun
  • Chiefly preceded by the: the art of making motion pictures; filmmaking. 

How often have the words drive-in and seventh art occurred in a corpus of books? (source: Google Ngram Viewer )