Hello everyone! As a suggestion, I would choose the high-speed route from Mannheim to Stuttgart. This is a 99 kilometer high-speed route in the southwest of Germany, in Baden-Württemberg. This route is used both day and night by "DB Fernverkehr" and "DB Regio" trains, as well as freight trains and "FlixTrain". (FlixTrain only runs on one section, because shortly before Mannheim the Flixtrain takes a junction in the direction of Heidelberg). Important details: => Maximum top speed: 280 kilometers per hour => Lenght: 99 kilometers Services: 1. ICE services from Stuttgart to Mannheim and back 2. IC/EC services from Stuttgart to Mannheim and back 3. IC2 services from Stuttgart to Vaihingen (Enz) and back 4. Regional services from Stuttgart to Vaihingen (Enz) and back 5. Freight services from Stuttgart to Mannheim and back 6. S-Bahn services from Stuttgart (s bahn underground station) to Stuttgart-Zuffenhausen and back Trains: 1. ICE services are completed with the ICE 1 (left) and ICE 4 (right). 2. IC/EC services are completed with the DB BR 101 (left), intercity cars in "IC Design" and the cabcar (right). 3. IC2 services are completed with the IC2: double deck cars in white "IC2 design", the DB BR 147 and the cabcar. 4. Regional services are completed with the FLIRT 3 in "bwegt" livery. 5. Freight services are completed with the DB BR 152 and its freight wagons. 6. S-Bahn services are completed with the DB BR 423 in the new white "S-Bahn Stuttgart" livery. I hope you like my suggestion and that DTG will build this route. If yes, make sure to like it and please let me a reply for feedback. AUCH GERNE AUF DEUTSCH. Take care and goodbye. Noel06