![Chevrolet bumper sticker](https://cdn.statically.io/img/static.wikia.nocookie.net/memoryalpha/images/c/c6/Chevrolet_bumper_sticker.jpg/revision/latest/scale-to-width-down/180?cb=20120730073056&path-prefix=en)
The bumper sticker on Taylor's Chevrolet
A bumper sticker was an adhesive placard attached to an automobile. They usually displayed a message of some type which reflected the views of the person who owned or operated the vehicle.
In 1986, Gillian Taylor's Chevrolet C/K truck had a bumper sticker which stated "I ♥ WHALES" on the rear window, which fit with her job as assistant director of the Cetacean Institute. (Star Trek IV: The Voyage Home)