cable car vs motor coach

cable car

noun
  • Any passenger vehicle attached to a moving cable for propulsion, and guided by some form of rails, on a specially-built track not in a street. 

  • A hanging carriage or car for transporting people or cargo 

  • A streetcar moved by gripping to rotating loop of cable running along the track. 

motor coach

noun
  • A powered railway vehicle, designed for passenger transport, capable to pull (or push) other railroad cars (compared to a railcar which only consists of a single railway vehicle with a driver's cab at both ends). 

How often have the words cable car and motor coach occurred in a corpus of books? (source: Google Ngram Viewer )