One of the mysteries of the English language finally explained.
1A model which is built for the sole purpose of demonstrating the function, performance, etc., of something.
2A product (especially a car or other vehicle) which can be tested by prospective buyers, and which may be sold at a reduced price after fulfilling this function for a time.
Late 19th century.
In this article we explore how to impress employers with a spot-on CV.