For the very young, an introduction to the joys of the traffic jam. The big red bus gets stuck in a pothole, which backs up a van, a car, a motorcycle, and so on. Then one by one, the vehicles depart, and children are left with a good introduction to transportation (and perhaps a misguided notion of how easy it is to get a pothole fixed). The simple story is structured to climax at a fold-out spread that reveals a broadside panorama of the vehicles and their concerned drivers. It's a nice touch that the worker who patches the hole is female. Hindley (The Wheeling and Whirling- Around Book, 1994, etc.) pens a lean, rhythmic prose, complemented by the colorful, straightforward drawings of Benedict in his picture-book debut. The theme of this slight but engaging ride will appeal to youngsters fascinated with all things on wheels and give them guidance on how to get out of a scrape. (Picture book. 3-6)