carriage trade vs fast lane

carriage trade

noun
  • Retail business with wealthy or upper-class customers, i.e. those who arrive in carriages 

  • Wealthy or upper-class people in general 

fast lane

noun
  • Any situation or activity where the pace is very rapid. 

  • On a multilane road, the lane intended or reserved for vehicles moving at faster speeds. 

How often have the words carriage trade and fast lane occurred in a corpus of books? (source: Google Ngram Viewer )