The global positioning system (GPS) is a space-based radio-positioning and time-transfer system. GPS satellites transmit signals to proper equipment on the ground. These signals provide accurate position, velocity, and time (PVT) information to an unlimited number of users on ground, sea, air, and space.
Since there was no internet back then, life was hard, the buyers had to pay more money, and it was very difficult. Nowadays it's different. People could just stay home go on the internet and choose a car, then the next day or a few more days, there car is right in their parking lot. Hoped this helps! :)
1) Use a good cam 2) Make sure you focus on it 3) Make sure you snap it at the right time.... I hope this helps!!!!!