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 fibreglass. 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.


The company was founded by Bob van Niekerk and Willie Meissner in 1958 after Meissner went to England and stumbled upon fiberglass, a new technology at the time. He wrote a letter to van Niekerk asking him to come to England and further study fiberglass crafting. They came into contact with South African designer Verster de Wit (who was working on the Sunbeam Alpine) who helped them style their first car design and taught them the design process. The pair finally found an attractive design and produced a mould. One body was made and sold in England to fund Bob's trip back to South Africa. On returning to South Africa, they built the first prototypes of the GSM Dart. GSM's were mainly sold in South Africa and England although several seem to have made it to Canada.

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