Autonomous cars, also known as self-driving cars, are vehicles that can navigate and operate without human intervention. They use a combination of sensors, cameras, and artificial intelligence to understand their surroundings and make driving decisions. This technology aims to improve road safety, reduce traffic congestion, and enhance mobility for those unable to drive. These vehicles are classified into different levels of automation, ranging from Level 0 (no automation) to Level 5 (full automation). Companies like Waymo and Tesla are at the forefront of developing autonomous driving technology, working to create systems that can handle various driving conditions and environments.