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
Prisoner transport vehicle escort high-risk transports. With this in mind, vehicles may also be equipped with radio communications, global positioning units, additional restraints and weapons, and other emergency equipment. To add additional security, prisoners are typically restrained while in transport and may be physically secured to the vehicle, handcuffed while in the secured area, or a combination of both. Prisoner transport vehicles may be operated by police services (see paddywagon), correctional services, field officers, court services, federal agencies such as the United States Marshals Service, or be contracted to private security companies. Prison buses were widely used in the late 1900's to transport