I spent a few hours on Graham's website, and I've learned a lot. For example, I learned how MG1 and MG2 can switch their role (MG1 becoming a motor and MG2 becoming a generator), allowing the planetary gear box to act as an overdrive to lower the engine's rpm on highway cruising. Amazing. Of course, it's about the classic Prius, but don't forget that the basics are the same ! This guy is clever, and he does like to share is knowledge. Thanks to him, really. Richard. 8) http://home.earthlink.net/~graham1/Prius/
