It seems pretty disingenuous to show two totally different models in the same video like this, the model that gets airborne doesn't have a back prop/shaft nor i

It seems pretty disingenuous to show two totally different models in the same video like this, the model that gets airborne doesn't have a back prop/shaft nor is it carrying a cargo container. No one expects a prototype to carry the full load, but it looks like it can't even get itself airborne at this stage...