Compares modes of transportation in Latin America to explain the growing importance of the airplane. There are scenes of river and ocean traffic, railroads, trucks and cars, airlines, and the Pan-American Highway. Draws largely on footage from Brazil and Mexico and includes some scenes of railroads on sugar plantations, an electric train in Mexico, and an avalanche in Chile. (Jane M. Loy, Latin American Research Review, vol.12 no.3, 1977)