The first video appears to be real. Who knows if it's a working prototype or just a mockup, but the fact that it's held together by C-clamps and other stuff you

The first video appears to be real. Who knows if it's a working prototype or just a mockup, but the fact that it's held together by C-clamps and other stuff you could get at Home Depot makes me lean towards the former. If it was purely for marketing they'd probably make it look more polished.