Sinclair C5 Isetta, a 1960s Italian microcar. Sinclair built a full-scale mock-up of it; according to Wood Rogers, "it looked great. I specified open sides to keep the cost down and having no doors meant it escaped a lot of regulations too." The design is strikingly similar to the modern Renault Twizy electric vehicle; Wood Rogers comments that "you could put the C10 into production today and it would still look contemporary." At the time of the C5's launch, Sinclair described the C15 as having "a futuristic design with an elongated 'tear-drop' shape, a lightweight body made of self-coloured polypropylene and a
Sinclair Zike public. The price (mail order) was £499, comparable with a top of the range tourer or mountain bike at that time. The initial production target was 10,000 Zikes a month. In May 1993 press reports stated that Tudor Webasto had terminated production because of low sales and that Sinclair was seeking a new manufacturer. In the end only around 2,000 units were sold. Sinclair himself moved on to the development of the Sinclair ZETA (Zero Emission Transport Accessory)—a detachable powerpack intended to sit on the wheel of any bicycle to help power it along. Sinclair put the failure of the