in 1971, Bob Hope wanted to present something unique to his good friend John Wayne for his birthday. So he commissioned legendary customizer George Barris to make a motorized Conestoga wagon

it was named the 1900 Overland Manure Spreader, or Bullshit Scraper

http://blog.hobbydb.com/2015/06/17/yeeeeeha-texas-bull-st-scraper-at-the-petersen-automotive-museum/