Poorly Made Plywood Mockup
The Alef "flying car" I saw at the North American International Auto Show (Detroit) in September was nothing more than a poorly made plywood mockup. It was a painted plywood body with a laser cut metal grid screwed to the top. Motors and rotors bolted to a plywood base plate (ie. nowhere for downdraft to flow). I'm fairly sure the rotors were lawnmower blades. I don't think the prototype even rolled because the wheels seemed to be bolted to hubs which attached directly to the body. Underneath, unpainted plywood was visible. This is all while the Alef ref was claiming to the crowd that this was a flying prototype and the crowd accepting it in awe.
I have a number of pictures on my website: https://www.aaroncake.net/misc/naias2023.asp