This book is very well researched, but it is also funny and personal. Driving is a very physiological process and Vanderbilt will explore the minds of many people in many times and places. Vanderbilt went to many places and interacted with many people to explore the human mind, and how it changes once enclosed in a large metal machine - the car.
Traffic is sometimes extremely easy - sometimes almost impossible - to change and influence, because millions of unpredictable humans with millions of additional factors make up traffic. After reading this book you will never drive the same way again, or think of traffic in the same way. Highly recommended, even to non-drivers.
Recommended to ages 15 and Up (easier for drivers to understand however).