This is slightly off topic but a few years ago I saw a concept vehicle that was being developed to replace the Hummer. It was powered by 4 electric motors, one for each wheel, with a diesel generator. For the life of me I can't remember where I read the article. The neatest part was the stealth capability, turn off the generator and run just off the batteries when you needed to be really quiet.
I hope the Volt takes off and they turn out a small SUV since I really need 4wd.