Lost? Never again

Imagine the situation. You are driving alone in desert or on a mountain. You have idea where you are. You passed the last house two hours ago. Then your car breaks down. It is night and it is cold. You have no mobile phone. What do you do? Well, next time take a GPS with you. This invention may be able to help you. It is a device which uses satellites to locate the user’s position. It can locate your position to within 20 metres. Some GPS devices are even more accurate. A GPS cannot start your car, but at least you will know where you are.