The people that will make this did make a tiny prototype (or a huge r/c model, it depends on how you see it) and released a video: https://www.youtube.com/watc

The people that will make this did make a tiny prototype (or a huge r/c model, it depends on how you see it) and released a video: https://www.youtube.com/watch?v=l2XW4n0nn2c https://www.youtube.com/watch?v=l2XW4n0nn2c where the model seemingly completely fails to reach ground effect and simply travels on its hydrofoils.