Argentina is a big country, and the best way to travel around is by bus. The number of companies offering good services in big, comfortable long-distance coaches is uncountable. Of course, for longer distances an airplane is faster, but it is from the bus you get to see the country.
The roads in Argentina are often very straight, and in some provinces the landscape is fascinatingly monotonous. Here we are in the Misiones provinces which is hilly and forested, and thus a little more varied.