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 design. The vehicle's handlebar steering was the brainchild of Wood Rogers, who decided at the outset that a steering wheel would not be practicable as it would make it impossible for a driver to get in and out easily – a serious safety disadvantage.