A revolutionary propulsion system

Speaking of revolutionary propulsion, why is there no news on two such systems;
the magnetoplasma sail and pulse detonation engines?
PDE research got a 7 million$ grant in 2000 and no news on breakthroughs to
this day. U of Oregon got big bucks to develop what they called the M2P2 system
about the same time.
My guess is that they WORK and promise CATS! And therefore have gone
classified to keep them out of the hands of us crazy civilians who want to go
to space cheaply.

^
//^\\
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