Scott, I have watched two videos which describe the system in different ways. So if I'm confused, so are a lot of other people - some of them Toyota service people.
Whichever. The facts are that Toyota does it in a very high-tech way. Their hybrid cars are powered by both a gas engine and an electric motor in varying ways depending on the driving situation, and the battery in them is claimed to never need replacement. And their regular hybrids never need to be plugged in.
(They do have plug-in hybrids, also, but I know even less about those.)
