Subte morning rush hour
To get an impression of how busy the subway can be at rush hour see this movie. This is at Catedral station. Catedral is connected to Bolívar station. Together these are connections between Lines A, D and E. This particular station Catedral is the start off point of the green line D. It runs for example past Facultad de Medicina which is the Medical University as well as through Palermo. It's quite a busy line normally.