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
Mary Craig Sinclair girlhood; and I had stolen them from her for a novel to be called "Sylvia"." Kimbrough married Upton Sinclair on April 12, 1913. At the time her friends said she did not share her new husband's "liberal ideas on matrimony." He had once said that marriage is "nothing but legalized slavery...for the average married woman." Her husband, Upton Sinclair, credited her with helping him to "write and publish three million books and pamphlets, flowing into every country in the world." In his autobiography, he portrayed Mary Sinclair as someone "who may not always have believed in what her husband was