Some nice information if you speak spanish:
http://www.eltiempo.com/bocas/nairo-quintana-en-entrevista-con-la-revista-bocas/13630275
He has repeated several times that he hates when the media says that he comes from a poor family or that he was poor when growing up. He says that he had everything in life and in the table. That he didn't need anything else. His father made sure that he didn't need anything else.
One last comment. 7 watts/kilo. They just didn't say the length of time of the test but I assume it was around 1 hour. Of course these are lab conditions. It would be impossible to do that on the road. That is like a nameplate horsepower for a machine. Then you have to apply efficiency and the road conditions. Even with all that they knew at a young age they had a rough diamond. And a very expensive one.
We are talking about VO2 max territory of 91-93 mL/(kg?min). Maybe some experts can shed some light on this.
Obviously when they did the test for sure he was not on the program because nobody had a clue. Not even him.