That appears to be about 650 miles (1050km). That’s around the point where many people will still prefer to fly. However, the train will likely make a few stops, making Berlin/Paris more accessible from other cities on the route.
Where there are high-speed routes today, hopefully 300 mph maglevs will be running in 50 years.
Where there are high-speed routes today, hopefully 300 mph maglevs will be running in 50 years.