Did you know horses and other animals used to be the guiding force behind most vehicles? Cars, trucks, buses, and airplanes as readers know them have evolved heavily throughout each century, and it's likely the future of transportation will use more new machinery to aid humans in their traveling ventures. Text is presented in manageable boxes with eye-catching artwork to help readers as they discover the history, present, and future of transportation. A glossary and index are included to further clarify key vocabulary words and content.