If you want to discuss actual practice, though, 75% of European international ground travel is by private car, not train.
That said, we can simply state the per-passenger-distance efficiency of different transport modes and leave the "you shoulds" to others.
If you want to discuss actual practice, though, 75% of European international ground travel is by private car, not train.
That said, we can simply state the per-passenger-distance efficiency of different transport modes and leave the "you shoulds" to others.