This type of transport solution features a reduced height, fully enclosed structure designed specifically for hauling automobiles. Its construction provides protection from the elements and road debris. The decreased vertical dimension offers potential advantages in aerodynamics and ease of loading vehicles with limited ground clearance.
The contained nature of this hauling method ensures greater security and privacy for the transported vehicle. This can be crucial when moving valuable or classic cars. Furthermore, the reduced drag co-efficient associated with a lower structure can potentially improve fuel economy during transit. Its origins lie in the need for secure, weatherproof transportation within the automotive industry and among collectors.