We lived in Durban, South Africa until 1969, then Johannesburg. My dad used to take us on the train up and down the coast nearly every weekend on steam trains such as in the video. Eventually they electrified the lines. Once a year we did the overnight to Johannesburg and vice versa. That was electric. South African Railways was great in those days.
http://www.youtube.com/watch?v=l62dTW1cvLU