Yes, I'm inclined to agree. The Deutsche Bahn German railways have tried very hard to run both freight and passenger at relatively high speeds on the same track, and where they have finished up is that basically the passenger runs during the day, and the freight runs at night. It's a short night and a long day. I don't think the results are very good. I'm not too familiar with this, and I think the conclusion is that it would have been better to separate it even there.
On June 9th, 2009. See this statement in context.