If you've seen this already, forgive me for the repeat. But speaking of the Duramax, have you guys seen the news about this guy in Kansas? The first story I saw on him was in Fast Company..
Motorhead Messiah
His company is SAE Energy (SAEenergy.com) and the guy is for real. I would LOVE it if a progressive car company like Toyota would put this guy's technology to work for them.