I either haven't been looking hard enough or... But can somebody explain to me or point me to a web site which gives a good explaination of what this GM 2-stage hybrid is all about? Anything will do. I'm trying to create a mental picture (or any other picture for that matter) about how all the pieces fit together.

It has been said:
Hybrid drivers come in 3 flavors, greenie, techie and cheapie. Pick any 2.
2005 Prius, Melinium Silver over gray, package 5 (AI)