The Sinclair C5 is a 1985 small one-person battery electric recumbent tricycle invented by Sir Clive Sinclair (most known internationally as the creator of the ZX Spectrum in 1982). It received a less than enthusiastic reception from the British media. Its sales prospects were blighted by poor reviews and safety concerns expressed by consumer and motoring organisations. The vehicle’s limitations – a short range, a maximum speed of only 15 mph (24 km/h), a battery that ran down quickly and a lack of weatherproofing – made it impractical for most people’s needs. The C5 became known as “one of the great marketing bombs of postwar British industry” and a “notorious example of failure”. This model is in memory of Sir Clive Sinclair (1940-2021) and all his great legacy.