This instructable contains 3D images which are best viewed with Red and Cyan 3D Glasses. However, for those of you who do not have 3D glasses, this instructable also contains 2D images.Every year about 700,000 vehicles get stolen in US. In fact, a car is stolen every 45 seconds.We all love our cars and whether it is a roaring Lamborghini or a purring Prius, we are attached to it and wish that it never gets stolen.I am very attached to my family car and take lots of precaution that I do not park my car in secluded places or double check that I always lock my car when I park it anywhere and always carry my car keys with me. However, I am still worried whether my car is safe. In order to get rid of these genuine worries, I decided to design my own low cost car tracking system.In this instructable, I have explained the process of building one's very own Global Car Tracking System -'Athena' - for a cost of just 100$. The steps for building this device is very simple and explained in a lucid manner. The skills required for you to build this is minimum (Basic knowledge about electronics and the Arduino IDE).I have christened this device by the name 'Athena' because Athena is the Greek Goddess of navigation.So what are we waiting for.....let's get started.......