Sinclair C5 computers like the hugely successful ZX81 and ZX Spectrum, an affordable electric vehicle could unleash pent-up demand for a market that did not previously exist. However, Sinclair performed no market research to ascertain whether there was actually a market for his electric vehicle; as the director of the Primary Contact advertising agency commented in January 1985, the project continued all the way to the prototype stage "purely on the convictions of Sir Clive". With Sinclair's new specifications in hand, Ogle worked on a three-wheeled design dubbed the C5, which bore similarities with the earlier three-wheeled Bond Bug – another Ogle
Mary Craig Sinclair Mary Craig Sinclair Mary Craig Sinclair (1882–1961) was a writer and the wife of Upton Sinclair. She was born Mary Craig Kimbrough in Greenwood, Mississippi on February 12, 1882, the oldest child of Mary Hunter (Southworth) and Allan McCaskill Kimbrough, a judge. Beginning at age 13, Mary studied at the Mississippi State College for Women (starting with what were essentially high school classes) and graduated from the Gardner School for Young Ladies in New York City in 1900. Her father was a wealthy attorney with banking interests, and a member of one of the oldest elite Mississippi families. Kimbrough (called