Autonomous vehicles have the potential to revolutionize transportation by making it safer, more efficient, and accessible for all. They have evolved from early experiments in the 1920s to investments of billions by companies today. Autonomous vehicles use complex sensors and software to drive themselves and come in forms like self-driving cars, trucks, buses and drones. While they face challenges from limitations in technology, security concerns and needing new infrastructure and regulations, autonomous vehicles may help build smarter cities and new industries in the future.