Wondering which transport is best for traveling in Eastern Europe?

If you have ever visited Eastern Europe, you obviously are aware of 1 thing – in those countries it takes a bit longer to get from one city to another. When in the Western Europe train liness are extremely well developed (a great example may be TGV in France), in a lot of Eastern European countries that can still be more difficult. A great example, to explain this topis further, is Poland. It is the largest country in that area, which is extremely attractive for tourists, as: