The train to the German city of Stuttgart is pretty full. At each stop, people wearing Germany kits get on. There's a buzz of conversation about the German national football team and the upcoming FIFA World Cup in the US, Canada and Mexico. On one of the last days of March, Germany play Ghana in the final international break before World Cup preparations begin. Many fans started their journey first thing in the morning, including Dennis and Kai. The two friends from the north of Germany put on