And honestly, how does one turn a front wheel that in a very true sense of the word, cannot be said to exist? The "wheels" are just loops of the single tire. I can't tell from those renderings whether the piece the handlebar is attached to can actually move laterally in any way. I don't even think it's clear what the handlebars are attached to.

In the absence of any explanation or demonstration from the designer, I'm not inclined to believe that the designer has actually solved the VERY obvious problem.