Trailways is a transportation firm (similar to Greyhound and Jefferson Lines) that began operations in 1936 when five companies came together to offer inter-city travel to the public. The firm still exists today and has over 50 members who use the same brand.

General Motors (GMC) who had changed the bus industry in America with several features such as rear engines, high-deck buses, underfloor luggage space, semi-monocoque bus bodies, etc. allowed transporters to use these buses on long distance routes.

This 37 passenger seat model called PD-3751 was more popular (37 in 3751 denotes the number of passengers) than the other model called the PD-4751 which was more larger with 47 seats. Over 1600 of this model were made and supplied to firms such as Greyhound and Trailways.

This collectible in 1:43 is highly detailed.