This guys is pretty good at this or he must have been using some sort of trick to get to this level. Just look at that insane amount of money he has and the population he has. Well, the title already says it all since he already have 1M population. After seeing this, I am already thinking of getting a cheat for my android simcity from this site because grinding so slow can be frustrating. I just started out a few days ago and I am still at level 12. But this guy is already level 43!
Anyway, you might wanna check out previous post here and here.