I just saw the making of video and its an amazing piece of story telling. The visual look into there engineering process is something I think we all as designers can take away from. (though the didn’t show to much of the actual design side)
And they’re not even the first company to develop a hoverboard that only works on a specific surface: http://hendohover.com. At least the Hendo board allows the surface to be a big sheet instead of a narrow track. It is cool that the Lexus board doesn’t require any power, but it’s not like liquid nitrogen requires zero energy to create.
What I find interesting is that both of them seem to be developing technology for a somewhat frivolous recreational product whose significance seems to be mostly emotional / future-nostalgic. I’m sure both parties hope to parlay the technology into something more “practical,” but it is interesting that it’s not happening the other way around.