Tesla's Autopilot is an advanced driver-assistance system designed to enhance vehicle safety and convenience. It uses a combination of cameras, radar, and ultrasonic sensors to monitor the car's surroundings, allowing it to perform tasks like lane-keeping, adaptive cruise control, and automatic lane changes. While Tesla's Autopilot can assist drivers, it is not fully autonomous. Drivers must remain attentive and ready to take control at any time. The system is continually updated through over-the-air software updates, improving its capabilities and features as technology advances.