“Big Yellow Taxi” is a song written by Joni Mitchell. The song is about environmentalism and a failed romance Mitchell wrote the song on a trip to Hawaii during which a gigantic parking lot harshed her mellow, The song conceals a song about a failed romance. The title of the song appears only once in the song According to a tale, a man named Francesco Tasso instituted reforms to expand and centralize their postal-system business. One such reform was to make the delivery vehicles yellow, since that wasn’t a color that would offend anyone politically