An inefficient transportation network is one of the key challenges facing further economic growth in Colombia, according to a report from ratings agency Standard and Poor's (S&P).
It currently takes ten hours to travel 445 kilometres between Bogotá and Medellín, the country's two largest cities. According to the 2013 World Economic Forum, Colombia's overall infrastructure is better than Argentina's, Paraguay's and Venezuela's in Latin America.
"Considering that Colombia's economy has the potential to