When cars were first invented, something like an electronic map that "pin-points" you on the globe and could find the shortest route for you to take to get to your destination in your car would be rediculous, and would only be dreamed about by the people with the greatest imaginations. But today, this concept is reality, in fact, is being used by millions of people around the world right now. It's all done with something called the Global Positioning System, (GPS). Today it is very simple to use this. In cars like Mercedes, Lincoln, BMW, and a few others, computers are installed directly into your car before you even buy it. But not everyone can afford cars lik