VASIMR
This article is tagged for relocation to the Exoplatz.
Variable Specific Impulse Magnetoplasma Rocket (VASIMR)
A high performance plasma based propulsion system being developed by astronaut Franklin R. Chang Diaz, via the company Ad Astra Rocket Company (AARC) http://www.adastrarocket.com/missions.html
Possible applications include lunar cargo.