Glassport Motor Company (GSM) was a South African motor manufacturer based in Cape Town between 1958 and 1964. They produced the Dart and Flamingo sports cars. The name Glass Sport Motors is due to their use of fiberglass. GSM narrowly missed being South Africas first sports car maker, beaten by the GRP Protea. A Dart, Flamingo and Protea can be viewed at the Franschhoek Motor Museum in South Africa.