The original sound book series has a new addition: the Busy Vehicles Books! <p/> There are 4 exciting titles in the series, each page shaped like one of the 24 different vehicles, and a button to press on each page for some laugh-out loud fun at what each vehicle sounds like in action. <p/> Children will keep coming back to these books, as they learn something new with each reading, discovering the special jobs - on land, in construction, as emergency rescue, or over water - that each vehicle has. <p/> Every page will be a new adventure!