The GMC PD-4501 Scenicruiser, manufactured by General Motors (GM) for Greyhound Lines, Inc., was a three-axle monocoque two-level coach that Greyhound used from July 1954 into the mid-1970s. 1001 were made between 1954 and 1956. The Scenicruiser became an icon of the American way of life due to its presence throughout the United States in cities and along highways and popularity with the traveling public. The name was a portmanteau of the words "scenic" and "cruiser".