I am actually planning on going to Aachen, Germany in a few months. (It is in West-Central Germany) If you can show me how to get to Hambach, France to visit Smartville and back to Dusseldorf, Germany to catch a flight, I will consider it.
I prefer train as it should be the cheapest mode of transportation. I saw by car and that wouldn't work. Remember we are not in the USA. Its expensive to drive.