Sinclair Research "FM Wristwatch Radio", an LCD wristwatch with a radio attached. However, the watch had several problems and never went into full production. Sinclair had long had an interest in electric vehicles, and during the early 1980s he worked on the design of a single-seater "personal vehicle", eventually starting a company called Sinclair Vehicles Ltd in March 1983. He launched the Sinclair C5 electric vehicle on 10 January 1985, but it was a commercial disaster, selling only 17,000 units and losing Sinclair £7,000,000. Sinclair Vehicles went into liquidation later the same year. The failure of the C5, combined with those of
Hugh Macdonald Sinclair Hugh Macdonald Sinclair Hugh Macdonald Sinclair, FRCP (4 February 1910 – 22 June 1990) was a doctor, medical researcher, and expert in human nutrition. He is most widely known for claiming that what he called "diseases of civilization" such as coronary heart disease, cancer, diabetes, inflammation, strokes and skin disease are worsened by "bad fats". Hugh Macdonald Sinclair was the third of the four children of Colonel Hugh Montgomerie Sinclair and Rosalie Sybil Jackson. Through his father, he was descended from the Viking monarch of Finland, Woldonius, and the St Clair cousins of William the Conqueror. His great grandfather was