1962 GMC PD-4106
GM Buffalo bus is the slang term for several models of intercity motorcoaches built by the GM Truck and Coach Division of the General Motors Corporation at Pontiac, Michigan, between 1966 and 1980. “Buffalo” buses have a stepped roof in front, and the first three rows of seats are at different levels, mounted on stepped floors similar to some theatre seating.
As Scenicruisers became a familiar sight around the United States and in advertising, competing bus companies including members of the National Trailways Bus System sought a vehicle to compete. One of the product designs developed in response to this market demand was the GM Buffalo bus. Unlike the Scenicruiser, these models were available for sale to all operators, and in fact, Greyhound only purchased a few of them; the last GM bus purchased by Greyhound was a 1967 PD4107. Many features, such as the split-level design and the revision introduced in PD-4106 model, were included in the Buffalo bus.