The reason is that there is a demand of 6 times speed, but there is also a movie of normal speed, so please enjoy it.ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-CueiwfzORio.html
qjtvaddict not really... the way they do it is actually very safe, efficient and punctual. Also even if they wanted to put dedicated express tracks there is no space to put them.