bike cab vs cycle rickshaw

bike cab

noun
  • A cycle rickshaw used as a taxi. 

cycle rickshaw

noun
  • A rickshaw, mostly used as taxi, with two wheels in the back for the carriage and one wheel for steering in the front (or sometimes vice versa), propelled by the action of a driver’s feet upon pedals. 

How often have the words bike cab and cycle rickshaw occurred in a corpus of books? (source: Google Ngram Viewer )