This is correct and to show what that means:
Frankfurt to Berlin with a fast ICE: 4 hours, no changes.
With regional trains only: 10-14 hours, 3-6 changes.
With a car this trip is 5 hours. No one in their right mind would ever do such a trip with regionals only, it is extremely painful. In addition, the chance that one of the connections will be missed is extremely high.
With a car this trip is 5 hours. No one in their right mind would ever do such a trip with regionals only, it is extremely painful. In addition, the chance that one of the connections will be missed is extremely high.