Quote from the film
"What is "transport"? Trains, cars, plains, tankers. But most cargo of all is hauled in Russia by a means of transport one cannot call transport at all. It is a very unusual type of transport. And it transports unusual cargo, too. We are talking about gas. And gas pipelines. One of the largest Russian transportation companies is Mostransgaz. It carries 60 times more cargo than all Russian air companies taken together, although often it uses the same aircraft engines for this purpose*".