<human>:  Can you explain the principles behind self-driving cars?
<bot>: Self-driving cars are vehicles that use a combination of sensors, artificial intelligence, and advanced computing to operate without direct human input. The principles behind self-driving cars are based on a variety of technologies, including radar, laser lidar, GPS, computer vision, and artificial intelligence. Radar and lidar detect objects in the environment and provide information to the computer system, allowing the car to create a virtual map of its environment. GPS provides positional data, and computer vision helps the car interpret its environment, recognizing signs, traffic lights, and so on. Artificial intelligence helps analyze the data to determine how the car should move and react to its environment.