Hamburg to Hannover is something what I would call as a possible success story in RSC's history, this route here features a stunning 153km (95 mile) route, and to be honest the route is actually so great that it barely have any kind of bugs or issues at all! This is truly one great masterpiece that someone tried to create out of passion to show the world ... "Yes, this is Train Simulator, and I want it to be the best in the world, not because I care about money, but because I want to amaze you, the player."
Of course this is not really true, imo, but still this is one of the best tracks ever released, even though the maximum speed is only 200km/h I still consider this one of the best tracks that is currently available for Train Simulator 2014 (2015 as of right now).
The only cons of this track what I can mention is that there are no kilometer signs next to the track, I couldn't find not even one anywhere on the track what I fould really annoying to be honest, there was just absolutely no way for me to use a list with distances to be able to time my breaking. The second problem is that it's not possible to make Quick Drive to have an all-stopper run, you will miss a few stops probably, but not all.
So anyway, I can recommend this piece to you truly, it is a masterpiece that is released yet.
I will rate this piece of DLC 10 out of 10. Even considering it had backdraws and issues, the pros overweight the cons so much that I can guarantee you that if you get this route you will love it, even at full price.