The actual MotorVator web site
http://www.motorvation.tv/motorvatorlayout.htm
Their marketing is not nearly as good but the idea is pretty much the same. This one at least does not reduce the size of the intake. On the Spiralmax, it looks like if you put a couple of those in, the cross sectional area of the air flow would be reduced. Like putting a reducing orifice in your fuel line would make sense.
Ford and GM would die for improved fleet fuel efficiencies per the EPA regulations. I am sure they could have either of these mass produced for a song. I guess they just don't know about this. Maybe we should tell them before Toyota finds out or god forbid KIA or Suburu.