The Growth and Future of the Toyota Prius

Its interesting to look at todays toys and products and to think what came before them? What was it that paved the way for this to become the dominant product it is today? For example: when you look at the computer, what came before the computer that helped the computer become what it is today? A simple and broad answer, and not necessarily 100% accurate, could be the calculator. Not exactly the best answer, but you see what I am trying to get at. So what about the car industry, what car is making the future of cars a little more exciting? Well, Toyota has just recently announced that worldwide Prius sales have topped the 1 million mark.