The VIN is the tracking number from the government. The VIN is put on the vehicle so that you can tell what kind of vehicle it is, what color it was when it left the factory, what style of engine it had etc. but each vehicle has I believe nine numbers that are unique to that vehicle. Then when a new registered owner buys the vehicle the VIN gets attached to that drivers name address and ect. When an accident occurs the VIN has that wreck attached to its record which is stored in a number of places. To include your insurance company, your bank, your state's record department, an online source and the dealership. This is done for your safety so that when your vehicle gets stolen the police can track it. And little dealerships cannot sell it to after a theft and so that you can get the title if you lose it or accidentally throw it away when you move from a crummy apartment in MO to your folks house in AZ... Yeah I learned most of this information from experience.