Book 2 "Davey to the Rescue" A great big blue tractor arrives in the woodland and is going to do all the work, and it seems to Davey he will miss out. The big blue tractor, Colin the County, breaks down and has to be rescued by Davey. This all true.
The section for adults outlines the history of County Cars Ltd the company that made County tractors.
The "Davy" series of stories for young children in age range 2-7. These stories are based on true events and each story is lavishly illustrated with hand drawn art, not computer generated. Davey does exist as do all the characters and machines introduced. Each book has a small section at the back which is information for parents / adults about one of the characters in the book.