Just over 130 years ago, there were no cars in the world. Today, there are more than a billion of them! This book investigates how the invention of the automobile has dramatically changed our lives. It goes right back to the earliest examples and traces the story through to the great range of models available today. Find out what makes an engine turn, how the engine moves the wheels, and how wheels grip the road. Learn about cars powered by electricity, jet engines, or solar energy. This book will take young readers on a thrilling journey of discovery.