In todays world most of our long distance travel takes place by bus, train or airplane.

In Europe buses are mostly used for charters and city trips. They are cheap but not very comfortable. Long distance train trips have a similar kind of passenger as airplanes. Trains and plains have no specific group of consumers.

The only difference maybe that trains are a bit more luxurious and give the passenger more room to go for a walk through a carriage. Also you can enjoy the scenery were an airplan only offers a view of the clouds.