The 1971 Volkswagen bus, painted in the green, yellow and white of Brazil's flag, picked a good place to break down. Emilio Zagaia and Felipe Luis da Costa had just arrived in the small Guatemalan city of Coban. They were two Brazilians in a strange town, but they received some unexpected help right away. "The city's local Volkswagen club is looking for you," their mechanic told them. "They saw your car and took a picture of it."