I've just read this ancient thread, more for fun than interest in quantum physics. Then I googled Mark Goldes, who posted here in 2005 about his ZPE breakthrough - and he's still in the business. He runs a non-profit in sunny California now:
http://www.aesopinstitute.org/Apparently 0.energy didn't work out so well, just like Room Temperature Superconductors (or maybe the government suppressed them both), so he's invented a fuel-less car engine instead. It runs on ambient temperature:
"The background temperature of space is -455 degrees F. (close to Absolute Zero). When the temperature is 50 degrees F. anyplace on earth, there is more than 500 degrees F. of stored heat available to be utilized. Engines designed to run 24/7 on ambient heat will become as common as solar panels."
A much more reasonable approach to solving our energy dilemma, I think. Although some bridge capital is required.
(Jeeeesus, the guy must have been in this business for what, thirty years now? And he's still going! Where does he find them?)