Children are fascinated by the world around them, and "why" is a favourite word. This series takes as its starting point this natural desire to understand the world, and then feeds it with text and illustrations designed both to entertain and to inform. This book focuses on various methods of transport, and each spread contains one, two or three questions which investigate a specific theme or topic. Alongside are additional snippets of relevant information.

Answers questions about transportation and vehicles, including "Do airships run on air?" and "Why don't ships sink?"