Given the question: Build a movie plot around this: Where was it signed at? Inter-American Conference in Buenos Aires.
The answer is:
Panamericana - One street, two continents, three months, 12 countries and 13,000 kilometers!The adventure begins in Laredo (USA) and documents a trip through Central and South America til Buenos Aires (Argentina). The film Panamericana tells stories of lifes on and around the Panamericana. It illustrates unique natural beauty, contrasts of wealth and poverty, the importance of money as well as the world's longest consecutive road network from northern Alaska to southern Chile.Filmed on the original historic route between Laredo (USA) and Buenos Aires (Argentina), the idea of a single cross-continental highway was at the Fifth International Conference of American States in 1923. To consolidate peace, the convention on the Carretera Panamericana finally got signed on 23 December 1936 at the Inter-American Conference in Buenos Aires.