Or try Beluxtrain's classic Bundesbahn package - a well working collection of scenarios that no doubt brings me back to the times I was fooling around in the area. Best stuff ever made if you want to drive Padborg - Hamburg Altona or Kiel - Hamburg Hbf or Hamburg Altona-Itzehoe. Beats everything I ever tried before. Take note myself I made most of those scenarios summer, as northern Germany is like like very barren at autumn and spring. The route is not at fault... just facts
Adding a pic from Hamburg-Eidelstedt area. ICE city for miles. Just for ICE! And suddenly like in the jungle thereafter.