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Following the Challenge-X presentation presentation at General Motors headquarters last week, a group of bloggers including myself, Matt Kelly of The Next Gear, Lyle Dennis of gm-volt.com, Todd Kaho of Green Car Journal, Scott Anderson of Hydrogen Forecast, Philip Proefrock of Ecogeek, and Matt Mayer of GroovyGreen.com were invited to sit down to dinner with Nick Zielinski and Gary Smyth of General Motors.

Well, not exactly. After a history of getting maximum power out of whatever engine he could, inventor Bruce Cower is refocusing his talents onto fuel efficiency. He has spent a modest $1,000 over 1.5 years to reinvent our combustion cycle. He's taking the opposite route of Gary Smyth researching the efficiency potential of two-cycle ICEs, and perfecting a six-cycle engine. The basic idea is that the combustion chamber wastes a lot of energy in heat, so you can recapture some of that heat by squi