I think the saturn greenline hybrids are supposed to be more ecologically sound than that of the toyota's and they are less complicated and require less specialized equipment. They are a lot more simple in how they work. I'd like to see how the two compare from a ecological impact standard.

BTW- If Al Gore thinks he's all better than thou, when it comes to the environment, then maybe he shouldn't be flying around in a private jet (lots of exhaust) big tour busses (lots of gas) and living in a huge ass house(s) (lots of wasted energy.) He has more impact on the environment than all of us on this site combined.