The four pooled their money to buy the bus for USD 15,000, and saved up vacation time up over two years.
The bus, formerly used for public transport, is outfitted for a long road tour with four single beds, an eating area, and cabinets for storing gear.
"A lot of people say we are sick for making this long journey, but I say this is love," said 28-year-old Elias Sarrouf.
Now, the bus is back in Sao Paulo for Argentina's semifinal match with the Netherlands. They hope their team will win and go on to play the final match in Rio de Janeiro on July 13.
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They don't have tickets for the semifinal or the final, but they did get tickets for three of the earlier matches that Argentina played.
"We are fulfilling the dreams of many Argentines, and the truth is that we are having a great time here," said Jose Ribeti, 29.