This book has been a HUGE hit with our two-year-old boy. I recommend it very highly. I picked up this book on a trip away from home. I thought he would like the pop-up vehicles. He sure does! He is now about 2.5 yo, and we have read it every single night for months. Beyond the pop-up vehicles, this book is really rich. There are pictures tucked inside the vehicles (a birthday cake in the fire engine, doughnuts in the police car, a little mouse), and interesting scenes with charming animals on every page. My son does not just read this book--he crafts his own narratives, which we discuss each night, about the different scenes (why is the monkey picking up the penguin with the crane? why the elephant firefighter is blowing water from his trunk _and_ from the hose, etc). So it is a great learning item, as well as just enormously engrossing and engaging (I am a teacher, so I really appreciate this aspect). This is hands-down the book our son has liked more than any book he has ever had (and he has a lot). If you are looking for a book for a 2 year old boy, you could not do better than this. I would like to say a huge thank-you to the author and illustrator, for giving us all so many hours of joy.