Checker started to produce taxis from the beginning of its activities in 1923 until it shut down in 2010. The famous Marathon was released in 1960. This UPS version was used in Canada from 1975, where legislation prevented this company from using its trucks. This explains why some of these Marathons had only one seat, for the driver (it is not the case here).

Although the Marathon, released in 1960, is best known as a taxi, this massive 5.06 m/200 in.-long sedan was also available as a particular car. Equipped with General Motors engines, this model finished its career in 1982 without any big updates. This version is clearly a post-1974 model year, when the Marathon received big "girder"-style bumpers.