The Boeing 747 Large Cargo Freighter (LCF) or Dreamlifter is a wide-body cargo aircraft and the world’s longest cargo loader. Constructed by drastic modifications to an existing Boeing 747-400, it is used exclusively for transporting aircraft parts to Boeing from suppliers around the world. The 747 LCF’s unusual appearance has drawn comparisons to the Oscar Mayer Wienermobile and the Hughes H-4 Hercules (“Spruce Goose”).