 Heating in the carriages was provided by steam radiators, so in the winter months Vapor Clarkson steam generator wagons would be coupled between the locomotives and the rest of the train on the sections where the motive power was diesel or electric.After anti-apartheid sanctions were lifted in 1990, South Africa became a popular destination for railfans as Spoornet was still using many steam locomotives.In 1991, Spoornet began to operate the Trans Karoo Express with steam for part of its journey.