As much as I think this is a really innovative solution, Mazda seemed to think that Wankel engines were going to be the next big thing; so was the Miller Cycle engine. The trouble with Mazda is that they just don't have the reach to make new tech as popular as it could be, they need a partner. Just imagine the impact the Miller could have had had Ford been able to market it through Lincoln in NA, or Jag (at the time) in Europe.