Description Trucks and puzzles: what more could little boys ask for? Perhaps the added force of the Caterpillar brand behind them. With help from strong photography, this oversized board book and two-sided puzzle in one package helps kids learn about the parts of a truck. They then pop out the puzzle pieces in the book to put the truck together. On the other side of the puzzle is an illustration of a construction site, which can be used as a play mat for their own toy trucks.