“‘Where is un baño? ¿Dónde está? I really do need one,’ I told mi mamá.” When a young girl announces her urgent need during a Sunday drive, it sets the family off on a desperate yet entertaining search. Rhyming couplets—spiced up with Spanish words and phrases—carry the story along as the family goes from panadería to zapatería in search of an open shop. Finally, relief is found in a cozy restaurant. Afterward, the family stays to enjoy a nice meal, complete with lots of limonada, and then gets back in the car—only to have the whole thing start again.…