Wow. I got 13.9%. But in my defense, it's a bit of a flawed methodology because, for instance, I ranked three of the first question items in the right order but #4 was actually #1, so I feel I got 3 right, not 0 right.
Yes, nswef, it did make me glad I have a hybrid (2007 Prius). And, while I plan on driving it to the ground, when it needs replacing, I'll see what the best technology is at that point and invest in it. Hybrids aren't perfect as far as green goes, but they're a step in the right direction.