 The longest continuous highways are National Route 40, a 5000-km stretch along the Andes range and the 3000-km sea-side trunk road National Route 3, running from Buenos Aires to Ushuaia.Argentine long distance buses are fast, affordable and comfortable; they have become the primary means of long-distance travel since railway privatisations in the early 1990s greatly downsized Argentina's passenger rail service and plane tickets are more expensive.Competing providers differ little on their time-honoured formula, offering three different services regarding the number of stops and type of seats