Find out how self-driving cars could become the next big thing in transportation.Most people spend a lot of time driving. But what if they could simply choose a destination and relax, not needing to pay attention to speed limits, traffic, or other worries on the road? Some of today's most forward-thinking engineers are working to make this idea a reality with self-driving cars. Readers (Grades 3-5) will learn all about the technology behind these technological marvels.