whistlestop tour

noun2

1. •
   A trip by train in which one visits many locations along the way, especially if those locations are not major cities.

   • Gordon then accompanied the former Confederate president on what amounted to a whistlestop tour from Montgomery to Atlanta. — 1987
2. •
   An overview of a subject which includes a number of illustrative examples.

   • This chapter is a whistlestop tour of basic marketing ideas. — 2009