For Phil Knox, a video by Bjorn showing watt hours per kilometer with a regular cargo box and then he tested one that was designed to mount backwards and it showed a 9% drop in energy consumption. P.S. it was also quieter. This is what I told him was better some years ago but he just only now got around to testing it. Apparently it is illegal to mount them backwards unless they are specifically manufactured to do so with the mounting hardware.
https://youtu.be/Z0P6i1YsgII