Where is the money to invest in Brazil?

At this article Nassif looks for the funding sources that will boost the investiments in Brazil's infrastructure for the next years. At some point, excluding any dramatic turnover of the policital situation, the earnings from the pre-salt oil explotation will enhance the funding, but there's still internal savings that could spread through real economy as soon as the macroeconomic situation seem less cloudy. These investiments shall lead steadly to the economic growth without risking to improve Brazil's external debts. A rather different situation compared to the years in which Brazil faced the difficult choice between keep going as an underdevelopped nation or being a hopelessly indebted country.