Both the box tricycle and cargo trailer use a composite box made from a chopped strand E glass fibre sandwich with a polyurethane foam core to carry the load.
The box tricycle is front-loaded which enabled the use of a standard drive chain independent of the load carrier. The Ackermann’s steering geometry was optimized to ensure the steering linkage turns the wheels to the correct angle when going round corners.
The cargo trailer has an automatic brake which is actuated by the forward momentum of the trailer as the bicycle in front upon breaks. A jockey wheel on the trailers underside prevents the box from being damaged when the trailer is detached from the bicycle.