Aviation mystery...why isn't the SpeedHawk gaining traction?

It looks right.

Its performance is impressive.

Current helicopters can be modified easily (I think).

So why isn't the SpeedHawk gaining traction.  I also wonder why Piasecki isn't screaming to high heaven that it can solve the helicopter speed problem but is being ignored by the DoD.

Well, this mystery demands a solution.  Time to contact Piasecki and find out whats going on with this fantastic concept.

Note*
I also wonder if this concept hasn't gone black.  SOCOM produced a stealth BlackHawk, why would we doubt that they have this in their toolbox too?